Question

State which of the following methods is generally used for preparing the $Cu(N{O}_3{)}_2$ salts.

1: Neutralisation-insoluble base & dilute acid.

2: Neutralisation-alkali & dilute acid.

3: Simple displacement-active metal & dilute acid.

4: Direct combination.

5: Precipitation [double decomposition].

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is C 3

Copper reacts with nitric acid to form copper nitrate.

$3Cu+8HN{O}_3\to 3Cu(N{O}_3{)}_2+4H_{2}O+2NO$

Hence, the correct option is simple displacement-active metal & dilute acid.

Hence, the correct option is $\left(C\right)$