Q.

I. The potential of individual half-cell can be measured.II. Difference between the potentials of two half-cells can only be measured.III. Pt(s)H2gH+aq half - cell is called standard hydrogen electrode.Select the correct statement(s) and choose the appropriate option

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I and II

II and III

III and I

I, Il and III

answer is B.

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Detailed Solution

The potential of individual half'-cell cannot be measured. The difference between potentials of two half-cells give the emf of cell. Pt(s)H2gH+aq half-cell is called standard hydrogen electrode.

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