A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide
State one condition to ensure that the deposit is smooth, firm, and long-lasting.

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Solution

A low voltage current needs to be passed through this solution for a longer period of time.

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Q. A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide.
(a) What kind of salt is sodium argentocyanide?
(b) Why is it preferred to silver nitrate as an electrolyte?
(c) State one condition to ensure that the deposit is smooth, firm and long lasting.
(d) Write the reaction taking place at the cathode.
(e) Write the reaction taking place at the anode.

(a) Select the correct answer

The aqueous solution of the compound which contains both ions and molecules is

A. $H_{2} S O_{4}$

B. $H C l$

C. $H N O_{3}$

D. $C H_{3} C O O H$

(b) Correct the following statement ___.

Lead bromide conducts electricity.

(i) What kind of salt sodium argentocyanide ?

(ii) Why is it preferred to silver nitrate as an electrolyte ?

(iii) State one condition to ensure that the deposit is smooth, firm and long lasting.

(iv) Write the reaction taking place at the cathode.

(v) Write the reaction taking place at the anode.

(d) Aqueous solution of nickel sulphate contains $N i^{2 +}$ and $S O_{4}^{2 -}$ ions.

(i) Which ion moves towards the cathode ?

(ii) What is the product at the anode ?

A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide. Write the reaction taking place at the cathode.

Q. Which of the following reaction taken place at anode during electroplating of metal with silver using sodium argentocyanide as an electrolyte?

Answer in one word: Name of the metallic ions that should be present in the electrolyte when an article made of copper is to be electroplated with silver.

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A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide State one condition to ensure that the deposit is smooth, firm, and long-lasting.

A low voltage current needs to be passed through this solution for a longer period of time.

A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide
State one condition to ensure that the deposit is smooth, firm, and long-lasting.