﻿ Predict whether zinc and silver react with 1 M sulphuric acid to give out hydrogen or not. Give that the standard potentials of zinc and silver are – 0.76 volt and +0.80 volt respectively. : Kaysons Education

# Predict Whether Zinc And Silver React With 1 M Sulphuric Acid To Give Out Hydrogen Or Not. Give That The Standard Potentials Of Zinc And Silver Are – 0.76 Volt And +0.80 Volt Respectively.

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## Question

### Solution

Correct option is

+ 0.76, – 0.80

(a) To predict reaction of zinc with sulphuric acid:

If Zn reacts, the following reaction should take place

By convention, the cell will be represented as

Standard EMF of the cell

= 0 – (–0.76) = + 0.76 volt

Thus the EMF of the cell comes out to be positive.

Hence, the reaction takes place.

(b) To predict the reaction of silver with sulphuric place:

If Ag reacts, the following reaction should take place:

By convention, the cell may be represented as

= 0 – 0.80 = – 0.80 volt

Thus, the EMF of the supposed cell comes out to be negative. Hence, this reaction does not take place.

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