1.

If E_(cell)^(@) of electrochemical cell=1.1 V for possessing following chemical reaction, then what is E_(cell) ? Zn_((S))+Cu_((aq))^(2+)(0.1M) to Zn^(2+)(1M)+Cu_((S))

Answer»

2.12 V
1.8 V
1.07 V
0.84 V

Solution :According to following REACTION, `N=2`.
`E_(CELL)=E_(cell)^(@)-(0.0592)/(n)"log"([Zn^(2+)])/([CU^(2+)])`
`=1.1-(0.0592)/(2)"log"((1.0)/(0.1))`
`=1.1-0.0296log10`
`=1.1-0.296=1.0704V~~1.07V`


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