pH of an acid solution in contact with hydrogen electrode is two. Reduction potential of Hydrogen electrode is

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-59 mV

-118 mV

-5.9 mV

-11.8 mV

answer is B.

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Detailed Solution

ERP = -0.0591 pH ;ERP = -0.0591 (2) V ;ERP = -0.0591 (2) (1000) mV ;ERP = -118 mV.