MEDIUM
Earn 100

Define complex salts.

Important Questions on Acids, Bases and Salts

MEDIUM
If excess of CO2 is passed through the suspension of a compound ‘X’ in water, a compound ‘Y’ is formed. Substances ‘X’ and ‘Y’ dissolve in H2SO4 giving white compound ‘Z’ which is insoluble in water. Identify the compounds ‘X’, ‘Y’ and ‘Z’.
EASY

Which of the following are the example of double salt?

(A) FeSO4·NH42SO4·6H2O

(B) CuSO4·4NH3·H2O

(C) K2SO4·Al2SO43·24H2O

(D) Fe(CN)2·4KCN

Choose the correct answer.

HARD

State one relevant reason for the following:

  • Hydrated copper sulphate crystals turn white on heating.
MEDIUM
Aluminium oxide is called amphoteric oxide. Give reason. 
MEDIUM
A light greenish salt is soluble in water. On passing H2S gas into the solution, a black precipitate is obtained which dissolves readily in HCI. The metal ion present is 
EASY
The number of cations produced by Mohr's salt in solution is
MEDIUM

Answer the following:

Write the formula of a salt that contains water of crystsllisation.

MEDIUM
What do you mean by the family of salts?
HARD

State one relevant observation for the following reactions:

  • Addition of excess ammonium hydroxide into copper sulphate solution.
MEDIUM
Write the name and formula of one salt which contains ten molecules of water of crystallisation.
HARD
The metal salt A is blue in colour. When salt A is heated strongly over a burner, then a substance B is eliminated and a white powder C is left behind. When a few drops of a liquid D are added to powder C, it becomes blue again. What could be A,B,C and D?
EASY
Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.
MEDIUM
What is meant by 'hydrated' and 'anhydrous' salts? Explain with examples.
MEDIUM
Write the name and formula of one salt which contains five molecules of water of crystallisation.
EASY
What is meant by "water of crystallisation" in a substance? Explain with an example
HARD
What are neutral salts, acidic salts and basic salt. Give two examples each of neutral, acidic and basic salts.
MEDIUM
What is a Salt? Name any two salts.
MEDIUM
Predict if the solutions of the following salts are neutral, acidic or basic: NaCl,KBr,NaCN,NH4NO3,NaNO2 and KF.
MEDIUM
What is meant by a family of salts? Explain with examples.