Name: Qualitative Analysis of Anions
Uploaded: 2019-07-19
Duration: 2 min 57 s
Description: Qualitative analysis of inorganic salts means the identification of cations and anions present in the salt or a mixture of salts. Let's study anions now.

Question

Match the following:

(i) Lead nitrate	(a) A black oxidising agent.
(ii) Copper hydroxide	(b) A gas which is absorbed by ${FeSO}_{4}$ to give a reddish-brown addition compound.
(iii) Nitrogen dioxide	(c) A coloured metallic hydroxide insoluble in excess of sodium hydroxide, but soluble in excess of ammonium hydroxide.
(iv) Lead chloride	(d) A chloride which is insoluble in cold water but soluble in hot water.
(v) Manganese dioxide	(e) A nitrate which on thermal decomposition forms a yellow amphoteric oxide as a residue.

Accepted Answer

(i) A nitrate which on thermal decomposition forms a yellow amphoteric oxide as a residue is lead nitrate.

(ii) A coloured metallic hydroxide insoluble in excess of sodium hydroxide, but soluble in excess of ammonium hydroxide is copper hydroxide.

(iii) A gas which is absorbed by ${FeSO}_{4}$ to give a reddish-brown addition compound is nitrogen dioxide.

(iv) A chloride which is insoluble in cold water but soluble in hot water is lead chloride.

(v) A black oxidising agent is manganese dioxide.

(i) Lead nitrate (e) A nitrate which on thermal decomposition forms a yellow amphoteric oxide as a residue.

(ii) Copper hydroxide (c) A coloured metallic hydroxide insoluble in excess of sodium hydroxide, but soluble in excess of ammonium hydroxide.

(iii) Nitrogen dioxide (b) A gas which is absorbed by ${FeSO}_{4}$ to give a reddish-brown addition compound.

(iv) Lead chloride (d) A chloride which is insoluble in cold water but soluble in hot water.

(v) Manganese dioxide (a) A black oxidising agent.

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