Advertisements
Advertisements
Question
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?
Solution
(i) Water of cystallization.
(ii) White.
(iii) Efflorescence.
(iv) Sodium chloride.
APPEARS IN
RELATED QUESTIONS
State one relevant observation for the following:
Anhydrous calcium chloride is exposed to air for some time.
Write a balanced equation for the preparation of the following salts:
Copper sulphate from Copper Carbonate.
Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid
Give the names and formulae of any two salts. Also name the acids and bases from which these salt may be obtained.
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
(a) blue litmus red?
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH4)2SO4
Which of salts will give:
acidic solutions?
How many molecules of water of crystallisation (per formula unit) are present in:
copper sulphate crystals?
Distinguish by a chemical test sodium hydroxide solution and ammonium hydroxide solution.
Write any five uses of salts.
An aqueous solution of a salt turns blue litmus to red. The salt could be the one obtained by the reaction of ______.
