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The emf of the following three galvanic ...

The emf of the following three galvanic cells :`1. Zn//Zn^(2+) ( 1M) || Cu^(2+) (1 M) //Cu`
`2. Zn//ZN^(2+ ) (1 M)|| Cu^(2+) //cu
`3. Zn//Zn^(2+) (1 M) || Cu^(2+) (0.1 M) Cu`
are repersented by `E_1, E_2, E_3` which of the following statement is true ?

A

`E_1 gt E_2 gt E_3`

B

`E_3 gt E_1 gt E_2`

C

`E_3 gt E_2 gt E_1`

D

`E_2 gt E_1 gt E_3`

Text Solution

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The correct Answer is:
D
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E_(1) , E_(2) and E_(3) are the emfs of the following three galvanic cells respectively I. Zn((s)) | Zn^(2+) (0.1M) | | CU^(2+) (1M) | Cu((s)) II. Zn((s)) ZN^(2+) (1M) || Cu^(2+)(1M) | Cu(s) III. Zn(s) | Zn^(2+) (1M) || CU^(2+)(0.1M)CU(s)

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