A Galvanic cell is composed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum emf.

0.1 M HCl

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0.1 M CH3COOH

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0.1 M H3PO4

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0.1 M H2SO4

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Solution

The correct option is B
0.1 M CH3COOH

Lower the concentration of of H⁺ ion, lower the reduction potential of

hydrogen electrode, hence higher the emf with standard hydrogen

electrode .

CH3COOH will furnish minimum H+.

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A Galvanic cell is composed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum emf.

The correct option is B 0.1 M CH3COOHLower the concentration of of H+ ion, lower the reduction potential of hydrogen electrode, hence higher the emf with standard hydrogen electrode . CH3COOH will furnish minimum H+.

The correct option is B
0.1 M CH3COOH

Lower the concentration of of H⁺ ion, lower the reduction potential of

hydrogen electrode, hence higher the emf with standard hydrogen

electrode .

CH3COOH will furnish minimum H+.