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The atomic weight of silver is 108 and t...

The atomic weight of silver is 108 and that of copper is 64. A solution of silver nitrate and a solution of copper sulphate in two separate beakers are electrolysed by connecting them in series. After passing current the .quantity of silver deposited was 10.8 g. The amount of copper deposited at the same will be

A

6.4 g

B

12.8 g

C

3.2 g

D

10.8 g

Text Solution

Verified by Experts

The correct Answer is:
C
According to Faraday.s second law of electrolysis,
`(m_1)/(m_2)=(E_1)/(E_2)`
`(m_Ag)/(m_(Cu))=(E_(Ag))/(E_(Cu)),(10.8)/(m_(Cu))=108/32`
`m_(cu)=(10.8xx32)/(108xx10)=32g`
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