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  4. From the solution of which of the following one faraday of electricity will liberate one gram atom of metal?

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Q. From the solution of which of the following one faraday of electricity will liberate one gram atom of metal?

Chhattisgarh PMTChhattisgarh PMT 2005

Solution:

One Faraday deposits one equivalent which also one gram atom for $N a$. (i)
$N a_{(l)}^{+}+1 e^{-} \rightarrow N a(s) ;$ ($IF$ of electricity is required)
$B a_{(l)}^{2+}+2 e^{-} \rightarrow B a(s) ;$ ($2F$ of electricity required)
$C u_{(l)}^{2+}+2 e^{-} \rightarrow C u(s) ;$ ($2F$ of electricity is required)
$A l_{(l)}^{3+}+3 e^{-} \rightarrow A l(s) ;$ ($3F$ of electricity is required)