1(ix)
Salts can be prepared by the action of dilute acid on:
- bases
- carbonates
- metals
- sulphites
The method which cannot be used for the preparation of copper salts is:
- (a)1
- (b)2
- (c)3
- (d)4
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3
Reason — Copper lies below hydrogen in the activity series, so it does not displace hydrogen from dilute acids. Hence, copper salts cannot be prepared by the action of dilute acids on the metal copper.
However, copper salts can be prepared from copper bases like Cu(OH)2, copper carbonate (CuCO3), and copper sulphite by the action of dilute acid.