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For half cells Ti^(3+)//Ti^(+) and Ti^(+...

For half cells `Ti^(3+)//Ti^(+)` and `Ti^(+)//Ti,E^(@)` values are 1.26 and `-0.336V` respec tively. The `E^(@)` value for the half cell `Ti^(3+)//Ti` is

A

0.924V

B

0.72V

C

2.184V

D

1.596V

Text Solution

Verified by Experts

The correct Answer is:
b

`Ti^(3+)+2e^(-)rarrTi^(+):E_(1)^(@)=1.26V`
`Ti^(+)+e^(-)rarrTi:E_(2)^(@)=-0.336V`
`Ti^(3+)+3e^(-)rarrTi:E_(3)^(@)=?`
`DeltaG_(3)=DeltaG_(1)+DeltaG_(2)`
`n_(3)E_(3)^(@)F=n_(1)E_(1)^(@)F+n_(2)E_(2)^(@)F`
`3E_(2)^(@)=2xx1.26+1xx(-0.336)`
`E_(3)=(2.52-0.336)/(3)`
`=(2.184)/(3)=0.728V`
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