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Predict the products of electrolysis in each of the following: An aqueous solution of AgNO3 with silver electrodes. - CBSE (Science) Class 12 - Chemistry

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Question

Predict the products of electrolysis in each of the following:

An aqueous solution of AgNO3 with silver electrodes.

 

Solution

(i) At cathode:

The following reduction reactions compete to take place at the cathode.

`Ag_(aq)^+ e^(-) -> Ag_(s); E^@ = 0.80 V`

`H_(aq)^(+) +e^(-) -> 1/2 H_2(g); E^@ = 0.00 V`

The reaction with a higher value of `E^@` takes place at the cathode. Therefore, deposition of silver will take place at the cathode.

At anode:

The Ag anode is attacked by `NO_3^(-)` ions. Therefore, the silver electrode at the anode dissolves in the solution to form Ag+.

 

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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 3: Electrochemistry
Q: 18.1 | Page no. 92

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Solution Predict the products of electrolysis in each of the following: An aqueous solution of AgNO3 with silver electrodes. Concept: Electrolytic Cells and Electrolysis - Introduction.
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