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प्रश्न
The pH values of three solutions A, B and C are given in the table. Answer the folloiwng questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
Which solution will liberate CO2 when reacted with sodium carbonate?
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उत्तर
Solution B with acidic pH liberates CO2 with sodium carbonate.
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संबंधित प्रश्न
Write a balanced equation for the preparation of the following salts:
Zinc carbonate from Zinc sulphate
What is a salt?
Give the names and formulae of any two salts. Also name the acids and bases from which these salts may be obtained.
The salt whose aqueous solution will have no effect on either red litmus or blue litmus is ______.
A salt whose aqueous solution will have a pH of more than 7 will be ______.
Give one example of a salt which gives an aqueous solution having:
pH equal to 7
Write the name and formula of one salt which contains:
Five molecules of water of crystallisation
State one observation for each of the following :
Lead nitric is heated strongly in a test tube.
Taking sodium carbonate as an example, give the meaning of the following terms:
Water of crystallization
Answer the following questions below, relating your answers only to salts in the following list:
Sodium chloride, anhydrous calcium chloride, copper sulphate-5-water.
(i) What is the name given to the water in the compound copper sulphate-5-water?
(ii) If copper sulphate-5-water is heated, the water is driven off leaving anhydrous copper sulphate. What is the colour of anhydrous copper sulphate?
(iii) By what means, other than heating, you can dehydrate copper sulphate-5-water and obtain anhydrous copper sulphate?
(iv) Which one of the salts in the given list is deliquescent?
