Question

Which salt cannot be directly used as an electrolyte ?

• A. ${AgNO}_3$
• B. $Na\left[Ag\right(CN{)}_2]$
• C. Both of them
• D. None of these

Answer 1

The correct option is A

${\mathrm{AgNO}}_3$

Step 1: Explanation for correct option

(a) ${\mathrm{AgNO}}_3$:

Although an ${\mathrm{AgNO}}_3$ solution is an excellent electrolyte, it is not suitable for electroplating silver onto an object because it undergoes a rapid redox process, which causes uneven electroplating.

Step 2: Explanation for Incorrect option

(b) $Na\left[\mathrm{Ag}(\mathrm{CN}{)}_2\right]$ is Potassium Silver Cyanide-like structured and crystallizes in the monoclinic space group. The structure is three-dimensional.