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An electrochemical cell is shown below ...

An electrochemical cell is shown below `Pt, H_(2)(1 "atm")|HCl(0.1 M)|CH_(3)COOH(0.1 M)|H_(2)(1 "atm")`, The emf of the cell will not be zero, because

A

The pH of 0.1 M HCl and 0.1 M acetic acid is not the same

B

Acids used in the two compartments are different

C

E.M.F of a cell depends on the molarities of acids used

D

The temperature is constant

Text Solution

Verified by Experts

The correct Answer is:
A

`E_("cell") ne 0` because `[H^(+)]` is not same in 0.1 M HCl and 0.1 `M CH_(3)COOH`.
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The electrochemical cell is set up as pt, H_(2)(1 atm)| HCl (0.1 M)|| CH_(3)COOH (0.1 M) | H_(2) (1 atm) , pt. The emf of the cell is (Ka =10^(-3) xx 1.8 )

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