NEET 2026 Chemistry Nernst Equation MCQ Question
Calculate emf of the half cell given below: Pt (s) | H₂(g, 2 atm) | HCl (aq, 0.02 M) E°H⁺/H₂ = 0 V (Given: 2.303 RT/F = 0.059, log 2 = 0.3010)
–0.109 V
0.035 V
–0.035 V
0.109 V
Correct Answer
Detailed Explanation
Using the Nernst equation, E = E° - (2.303RT/nF) log ([H⁺]²/P_H₂). Substituting the given values, E = 0 - 0.059 log (0.0004/2) = 0.109 V.
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