Acids And Bases Chapter Test B Answers links:
[GET] Acids And Bases Chapter Test B Answers
Posted on 22-Apr-2021
Therefore water is added to acid very slowly with cooling. Giving an activity illustrate how these are inter convertible. CuSO4 is anhydrous copper sulphate. Aim: To show crystalline salts contain water of crystallization. Material Required: CuSO4....
[ VIEW ANSWER ] [ Find Similar ]
[FREE] Acids And Bases Chapter Test B Answers | new!
Posted on 12-Mar-2021
Heat crystals in boiling tube. Observe vapours being condensed in test tube. Cool the crystals and add few drops of water into it. Observation:Water vapours get condensed in a test tube and colour of blue crystals changes into white. On adding water...
[ VIEW ANSWER ] [ Find Similar ]
Chemistry Concepts And Applications
Posted on 10-Mar-2021
Sodium hydrogencarbonate gives CO2 which makes cake soft and fluffy. Tartaric acid neutralizes the bitterness due to sodium carbonate produced. Justify the statement. How is it converted into washing soda? Sodium hydrogencarbonate is a salt of sodium hydroxide strong base and carbonic acid weak acid. It is basic salt. It is converted into washing soda by heating followed by crystallization. Describe an activity with diagram to illustrate that the reaction of metal carbonates and metal bicarbonates with acids produces carbon dioxide. Write the relevant equations of all the reactions that take place. Name any two forms in which calcium carbonate is found in nature. Aim: To show acid reacts with metal carbonate to liberate carbon dioxide, Material Required: CaCO3 marble chips , Woulfe-bottle, thistle funnel, dil. HCl, gas jar, matchbox, delivery tube bent at two right angles, lime water. Take marble chips in a Woulfe-bottle.
[ VIEW ANSWER ] [ Find Similar ]
Arrhenius Acids And Bases
Posted on 5-Mar-2021
Set the apparatus as shown in diagram. Add dil. HCl with the help of thistle funnel. Collect the gas in gas jar by upward displacement of air. Bring a burning matchstick near the gas jar and record your observations. Pass the gas evolved through lime water and note down your observations. Observations: The burning matchstick will get extinguished because carbon dioxide is neither combustible nor supporter of combustion. Lime water will turn milky due to formation of insoluble calcium carbonate.
[ VIEW ANSWER ] [ Find Similar ]
Strong And Weak Acids And Bases And Their Salts
Posted on 10-May-2021
It can be used as test for CO2. The chemical reactions taking place are as follows: Conclusion: Metal carbonates react with dilute acids to liberate carbon dioxide. Limestone, chalk, marble are different forms of calcium carbonate. All metal carbonates and hydrogen carbonates react with acids to form corresponding salts, water and carbon dioxide. Write its formula and chemical name of this salt. Name the source from where it is obtained. Mention its colour and the reason due to which it has this colour. Write the chemical equation for it. Its formula is NaCl Sodium chloride. It is obtained from sea water. Its chemical formula is NaCl. It may be white or light blue or yellow depending upon impurities present in it. How can it be verified? The compound is also formed by chlor-alkali process. Write chemical name and formula of X. Describe chlor-alkali process with balanced chemical equation.
[ VIEW ANSWER ] [ Find Similar ]
NCERT Solutions For Class 10 Science Chapter 2 Acids, Bases And Salts
Posted on 24-Mar-2021
Name the type of reaction occurs when X is treated with dilute hydrochloric acid. Write the chemical equation. When sodium chloride solution brine solution is electrolysed, sodium hydroxide solution is formed. H2 and Cl2 gases are liberated. This is chlor-alkali process. The above reaction is neutralization reaction. If water is added to acid, bottle of acid will break. A student dropped few pieces of marble in dilute hydrochloric acid, contained in a test-tube. The evolved gas was then passed through lime water.
[ VIEW ANSWER ] [ Find Similar ]
Cabbage Chemistry--Finding Acids And Bases
Posted on 9-May-2021
What change would be observed in lime water? What will happen if excess of gas is passed through lime water? With the help of balanced chemical equations for all the changes explain the observations. Write its chemical name and formula. How is it manufactured? Write the chemical equation for the reaction involved. Also list two other uses of the compound. Its chemical name is calcium oxychloride.
[ VIEW ANSWER ] [ Find Similar ]
CBSE 10th Science Board Exam 2021: Important MCQs From Chapter 2: Acids, Bases And Salts
Posted on 28-Mar-2021
Turmeric contains a type of yellow pigment which is responsible for the staining the clothes. These stains can be removed using the following methods: 1. Fresh stains can be removed easily by immediately washing them with a soap. However, if there is a delay in washing, the stains will be hard to remove in a single wash. In this case, the stains need to be washed repeatedly using a soap. By applying lemon juice or vinegar on these stains along with a dish soap can help remove the turmeric stains in a better way. Page No Is the meaning of 'weak acid' the same as that of 'dilute acid'? Answer: Weak acids are completely different from dilute acids.
[ VIEW ANSWER ] [ Find Similar ]
Acids Bases And Salts Chapter Wise Important Questions Class 10 Science
Posted on 27-Mar-2021
Weak acids are non-corrosive in nature even in their highly concentrated state. Generally, all organic acids like citric acid, lactic acid, oxalic acid, etc. However, dilute acids are also non-corrosive in nature but are formed by mixing concentrated acids with a large amount of water. For example, dilute hydrochloric acid, dilute sulphuric acid, etc. Dilute acids can include both strong and weak acids. Page No Question 3: The wastes of many factories contain acids.
[ VIEW ANSWER ] [ Find Similar ]
4.3: Acid-Base Reactions
Posted on 19-Mar-2021
Why is it considered necessary to neutralize them before allowing the wastes to flow into water bodies? Answer: Acids are extremely corrosive in nature; therefore, they can cause extensive damage to the living organisms present in water. Also, if the wastes are allowed to flow into the water bodies without treatment, they can pollute the water, making it unfit for drinking. Hence, the wastes should be neutralised by bases before releasing them into water bodies.
[ VIEW ANSWER ] [ Find Similar ]
MCQ Questions For Class 10 Science Acids Bases And Salts With Answers
Posted on 4-Mar-2021
The hydroxide of alkali and alkaline earth metals are soluble in water. These are also known as alkali. For example; sodium hydroxide, magnesium hydroxide, calcium hydroxide, etc. Alkali is considered a strong base. Chemical properties of bases: i Reaction of Base with Metals: When alkali base reacts with metal, it produces salt and hydrogen gas. Sodium aluminate and hydrogen gas are formed when sodium hydroxide reacts with aluminium metal.
[ VIEW ANSWER ] [ Find Similar ]
NCERT Solutions For Class 10 Science Chapter 3 Metals And Non-metals
Posted on 13-May-2021
For example; carbon dioxide is a non-metal oxide. When carbon dioxide is dissolved in water it produces carbonic acid. Therefore, when a base reacts with non-metal oxide, both neutralize each other resulting respective salt and water. Calcium hydroxide gives calcium carbonate and water when it reacts with carbon dioxide. Examples: Sodium chloride and water are formed when hydrochloric acid reacts with sodium hydroxide a strong base. In a similar way, calcium chloride is formed along with water when hydrochloric acid reacts with calcium hydroxide a base. Thus, when an acid reacts with a metal oxide both neutralize each other. In this reaction, the respective salt and water are formed. When an acid, such as hydrochloric acid, reacts with calcium oxide, neutralization reaction takes place and calcium chloride, along with water is formed. Similarly, when sulphuric acid reacts with zinc oxide, zinc sulphate and water are formed.
[ VIEW ANSWER ] [ Find Similar ]
Word Chapter 2 Exam
Posted on 20-May-2021
Common in all bases: A base dissociates hydroxide ion in water, which is responsible for the basic behaviour of a compound. Example: When sodium hydroxide is dissolved in water, it dissociates hydroxide ion and sodium ion. Similarly, when potassium hydroxide is dissolved in water, it dissociates hydroxide ion and potassium ion. Thus, the base shows its basic character because of dissociation of hydroxide ion.
[ VIEW ANSWER ] [ Find Similar ]
NEET 2021: Exam Date (August 1), Registration (Soon), Eligibility, Syllabus, Pattern
Posted on 22-Mar-2021
Neutralisation Reaction: When an acid reacts with a base, the hydrogen ion of acid combines with the hydroxide ion of base and forms water. As these ions combine together and form water instead of remaining free, thus, both neutralize each other. Example: When sodium hydroxide a base reacts with hydrochloric acid, sodium hydroxide breaks into a sodium ion and hydroxide ion and hydrochloric acid breaks into hydrogen ion and chloride ion.
[ VIEW ANSWER ] [ Find Similar ]
Acids, Bases And Salts-MCQ
Posted on 28-Apr-2021
Hydrogen ion and hydroxide ion combine together and form water, while sodium ion and chloride ion combine together and form sodium chloride. Dilution of Acid and Base: The concentration of hydrogen ion in an acid and hydroxide ion in a base, per unit volume, shows the concentration of acid or base. By mixing of acid to water, the concentration of hydrogen ion per unit volume decreases. Similarly, by addition of base to water, the concentration of hydroxide ion per unit volume decreases. This process of addition of acid or base to water is called Dilution and the acid or base is called Diluted.
[ VIEW ANSWER ] [ Find Similar ]
MCQ Questions For Class 7 Science Chapter 5 Acids, Bases And Salts
Posted on 8-Apr-2021
The dilution of acid or base is exothermic. Thus, acid or base is always added to water and water is never added to acid or base. If water is added to a concentrated acid or base, a lot of heat is generated, which may cause splashing out of acid or base and may cause severe damage as concentrated acid and base are highly corrosive. Strength of Acid and Base: Acids in which complete dissociation of hydrogen ion takes place are called Strong Acids. Similarly, bases in which complete dissociation of hydroxide ion takes place are called Strong Bases. In mineral acid, such as hydrochloric acid, sulphuric acid, nitric acid, etc. Since inorganic acids hydrogen ions do not dissociate completely, so they are weak acids. So, to get the strength as well as acidic and basic nature of a given solution universal indicator is used. Universal indicator shows different colour over the range of pH value from 1 to 14 for a given solution.
[ VIEW ANSWER ] [ Find Similar ]
Important Question For Class 10 Science Acids, Bases, And Salts - 1medicoguia.com
Posted on 6-Mar-2021
Universal indicator is available both in the form of strips and solution. Universal indicator is the combination of many indicators, such as water, propanol, phenolphthalein, sodium salt, sodium hydroxide, methyl red, bromothymol blue monosodium salt, and thymol blue monosodium salt. The colour matching chart is supplied with a universal indicator which shows the different colours for different values of pH. Excess acid in stomach causes acidity indigestion. Antacids like magnesium hydroxide [Mg OH 2] also known as milk of magnesia and sodium hydrogen carbonate baking soda are used to neutralize excess acid. When the pH of acid formed in the mouth falls below 5. The excess acid has to be removed by cleaning the teeth with a good quality toothpaste because these kinds of toothpaste are alkaline in nature. Salts are electrically neutral. There are number of salts but sodium chloride is the most common among them.
[ VIEW ANSWER ] [ Find Similar ]
MCQ Questions For Class 7 Science Chapter 5 Acids, Bases And Salts - NCERT Solutions
Posted on 2-Apr-2021
Sodium chloride is also known as table salt or common salt. Sodium chloride is used to enhance the taste of food. Characteristics of salt: Most of the salts are crystalline soild. Salts may be transparent or opaque. Most of the salts are soluble in water. Solution of the salts conducts electricity in their molten state also. The salt may be salty, sour, sweet, bitter and umami savoury. Neutral salts are odourless. Salts can be colourless or coloured. Family of Salt: Salts having common acidic or basic radicals are said to belong to the same family. Neutral, Acidic and Basic Salts: i Neutral Salt: Salts produced because of reaction between a strong acid and strong base are neutral in nature. The pH value of such salts is equal to 7, i. Example : Sodium chloride, Sodium sulphate.
[ VIEW ANSWER ] [ Find Similar ]
Cabbage Chemistry--Finding Acids And Bases - Scientific American
Posted on 3-May-2021
Postassium chloride, etc. Sodium chloride NaCl : It is formed after the reaction between hydrochloric acid a strong acid and sodium hydroxide a strong base. Sodium Sulphate Na2SO4 : It is formed after the reaction between sodium hydroxide a strong base and sulphuric acid a strong acid. Potassium Chloride KCl : It is formed after the reaction between potassium hydroxide a strong base and hydrochloric acid a strong acid. The pH value of acidic salt is lower than 7. For example Ammonium sulphate, Ammonium chloride, etc. Ammonium chloride is formed after reaction between hydrochloric acid a strong acid and ammonium hydroxide a weak base. Ammonium sulphate is formed after reaction between ammonium hydroxide a weak base and sulphuric acid a strong acid. For example; Sodium carbonate, Sodium acetate, etc. Sodium carbonate is formed after the reaction between sodium hydroxide a strong base and carbonic acid a weak acid. Sodium acetate is formed after the reaction between a strong base, sodium hydroxide a strong base and acetic acid, a weak acid.
[ VIEW ANSWER ] [ Find Similar ]
Acid-Base Reactions - Chemistry LibreTexts
Posted on 24-Apr-2021
Cause of formation of acidic, basic and neutral salts: When a strong acid reacts with a weak base, the base is unable to fully neutralize the acid. Due to this, an acidic salt is formed. When a strong base reacts with a weak acid, the acid is unable to fully neutralize the base. Due to this, a basic salt is formed. When equally strong acid and a base react, they fully neutralize each other. Due to this, a neutral salt is formed. Acidic salt: The pH value of an acidic salt is less than 7. Basic salt: The pH value of a basic salt is more than 7. Some Important Chemical Compounds 1. It is formed after the reaction between sodium hydroxide and hydrochloric acid. It is a neutral salt. The pH value of sodium chloride is about 7.
[ VIEW ANSWER ] [ Find Similar ]
Class 10 Science Chapter 2 Notes
Posted on 12-May-2021
Sodium chloride is used in the manufacturing of many chemicals. It is also known as caustic soda. It is obtained by the electrolytic decomposition of solution of sodium chloride brine. In the process of electrolytic decomposition of brine aqueous solution of sodium chloride , brine decomposes to form sodium hydroxide.
[ VIEW ANSWER ] [ Find Similar ]
NCERT Solutions For Class 12 Chemistry Chapter 12 Aldehydes Ketones And Carboxylic Acids
Posted on 3-Apr-2021
In this process, chlorine is obtained at anode and hydrogen gas is obtained at cathode as by products. This whole process is known as Chlor — Alkali process. Use of products after the electrolysis of brine: Hydrogen gas is used as fuel, margarine, in making of ammonia for fertilizer, etc. It is also used in the manufacturing of bleaching powder and hydrochloric acid. Sodium hydroxide is used for degreasing of metals, manufacturing of paper, soap, detergents, artificial fibres, bleach, etc.
[ VIEW ANSWER ] [ Find Similar ]
Service Unavailable In EU Region
Posted on 10-Mar-2021
It is a solid and yellowish white in colour. Bleaching powder can be easily identified by the strong smell of chlorine. When calcium hydroxide slaked lime reacts with chlorine, it gives calcium oxychloride bleaching powder and water is formed. Aqueous solution of bleaching powder is basic in nature. The term bleach means removal of colour. Bleaching powder is often used as bleaching agent. It works because of oxidation. Chlorine in the bleaching powder is responsible for bleaching effect.
[ VIEW ANSWER ] [ Find Similar ]
Dilutions And Concentrations
Posted on 21-Mar-2021
Which one of the following is acidic? Which one of the following will turn red litmus blue? Which one of the following will turn blue litmus red? Methyl orange is a Pink in acidic medium, yellow in basic medium b Yellow in acidic medium, pink in basic medium c Colourless in acidic medium, pink in basic medium d Pink in acidic medium, colourless in basic medium. The nature of calcium phosphate is present in tooth enamel is a Basic b Amphoteric c Acidic d Neutral 7. Which of the following salts has no water of crystallization? The function of quick lime in soda lime mixture is to a Absorb moisture present in soda lime b Increase the efficiency of soda lime c Increase the pH of soda lime d Take part in reaction with NaOH 9. The Ph of a solution of HCL is 4.
[ VIEW ANSWER ] [ Find Similar ]
Neutralizing Acids And Bases
Posted on 9-Mar-2021
Learning Objective 1. Learn how to dilute and concentrate solutions. Often, a worker will need to change the concentration of a solution by changing the amount of solvent. Dilution is the addition of solvent, which decreases the concentration of the solute in the solution. Concentration is the removal of solvent, which increases the concentration of the solute in the solution. Do not confuse the two uses of the word concentration here! In both dilution and concentration, the amount of solute stays the same. This gives us a way to calculate what the new solution volume must be for the desired concentration of solute. The volumes must be expressed in the same units. Note that this equation gives only the initial and final conditions, not the amount of the change. The amount of change is determined by subtraction. Example 9 If Solution It does not matter which set of conditions is labelled 1 or 2, as long as the conditions are paired together properly.
[ VIEW ANSWER ] [ Find Similar ]
Living Science For Class 7 Science Chapter 7 - Acids, Bases And Salts
Posted on 9-Apr-2021
Using the dilution equation, we have 2. In going from Test Yourself A 0. What is the new volume of the solution? Answer Usually this is done by evapourating or boiling, assuming that the heat of boiling does not affect the solute. The dilution equation is used in these circumstances as well. Does an aide run to a supply cabinet and take out an IV bag containing this concentration of KCl? Not likely. It is more probable that the aide must make the proper solution from an IV bag of sterile solution and a more concentrated, sterile solution, called a stock solution, of KCl.
[ VIEW ANSWER ] [ Find Similar ]
Acids And Bases (Previous Version) | Chemistry | Quiz | Visionlearning
Posted on 9-Mar-2021
The aide is expected to use a syringe to draw up some stock solution and inject it into the waiting IV bag and dilute it to the proper concentration. Thus the aide must perform a dilution calculation. Medical personnel commonly must perform dilutions for IV solutions. If the stock solution is Medical and pharmaceutical personnel are constantly dealing with dosages that require concentration measurements and dilutions.
[ VIEW ANSWER ] [ Find Similar ]
Acids And Bases Exercises
Posted on 13-May-2021
It is an important responsibility: calculating the wrong dose can be useless, harmful, or even fatal! Key Takeaways Calculate the new concentration or volume for a dilution or concentration of a solution. What is the difference between dilution and concentration? What quantity remains constant when you dilute a solution? What is the final concentration of the solution if it is diluted to mL? What is the final concentration of the solution if it is diluted to 3.
[ VIEW ANSWER ] [ Find Similar ]
No comments:
Post a Comment