"The ability of a base to react with a soluble metal salt" demonstrates characteristic of a base.
Answer: Option D
Explanation:
As the sodium hydroxide react with only with some metals. It is a very strong basic compound with a intense solubility in water and hygroscopic in nature. The ability of base is reflected from its potential to react with metals. In the given reaction:
[tex]\mathrm{CuSO}_{4}(a q)+2 \mathrm{NaOH}(a q) \rightarrow \mathrm{Cu}(\mathrm{OH})_{2}(s)+\mathrm{Na}_{2} \mathrm{SO}_{4}(a q)[/tex]
[tex]\mathrm{Cu} \mathrm{SO}_{4}[/tex] is an acidic property showing salt which is added with sodium hydroxide and this reaction result into a pale blue precipitate of basic copper hydroxide & sodium sulphate which is neutral salt. The reaction is a double displacement and precipitation reaction.
