`AgNO_(3)` is soluble salt of silver, but it is preferable to use (NaCN + AgCN) as an electrolyte for silver plating. Give a reason in support of your answer.

Explanation

(i) Formation of complex
(ii) The characteristic of salt responsible for electrolysis.
(iii) Comparison of strengths of the two electrolytes given.
(iv) Effect of addition of NaCl to a solution of AgCN
(v) Purpose of electroplating
(vi) Effect of addition of NaCN on the quality of electroplating.