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Given : E^(c-).(Ag^(o+)|Ag)=0.80V, E^(...

Given `:`
`E^(c-)._(Ag^(o+)|Ag)=0.80V, E^(c-)._(Mg^(2+)|Mg)=-2.37V,`
`E^(c-)._(Cu^(2+)|Cu)=0.34V,E^(c-)._(Hg^(2+)|Hg)=0.79V`
Which of the following statements is `//` are incorrect ?

A

`AgNO_(3)` can be stored in copper vessel.

B

`Cu(NO_(3))_(2)` can be stored in magnesium vessel.

C

`CuCl_(2)` can be stored in silver vessel.

D

`HgCl_(2)` can be stored in copper vessel.

Text Solution

Verified by Experts

The correct Answer is:
a,b,d
If` E^(c-)._(cell)gt0` then the reaction is spontaneous.
`a.` `E^(c-)._(cell)=0.8-0.34=0.46V`
`(2Ag^(o+)+Cu rarr 2Ag+Cu^(2+)`
`b.` `E^(c-)._(cell)=0.34-(-2.37)=2.81V`
`(Cu^(2+)+2Ag rarr Cu+2Ag^(2+))`
`c.` `E^(c-)._(cell)=0.34-0.8=-0.46V`
`Cu^(2+)+2Ag rarr Cu+2Ag^(2+))`
`d.` `E^(c-)._(cell)=0.79-0.34=0.45V`
`(Hg^(2+)+Cu rarr Cu^(2+)+Hg)`
In `(a), (b)`, and `(d),E^(c-)._(cell)gt0` which means that the respective solution in the respective vessel cannot be stored.
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