Question

Select the correct ‘anion’ of a salt from the anions given, which matches with description .

A: CO32-, B: NO31- (C) SO42-D : Cl-, E : S2-

1. The salt soln. reacts with AgNO3 soln. to give a white ppt. insoluble in dil. HNO3 .

2. The salt soln. reacts with Ba(NO3 )2 soln. to give a white ppt. insoluble in dil. HNO3 .

3. The salt soln. reacts with Ba(NO3)2 soln. to give a white ppt. soluble in dil. HNO3 but insoluble in dil. H2SO4 .

4. The salt reacts with dil. H2SO4 on heating evolving a gas which turns KMnO4 soln. pink to colourless.

5. The salt reacts with cone. H2SO4 on heating evolving a **** gas which turns potassium iodide paper brown.

Answer 1

1. Cl– ion(D)

2. SO4 2- ion(C)

3. CO32- ion (A)

4. S2- ion (E)

5. NO31- ion(B)