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MCQEasyJEE Main 2026 · 23 January, Shift 2Nernst Equation

Chemistry Question from JEE Main 2026 · 23 January, Shift 2

Electrochemical concentration cell with two metal electrodes M, separated by a semi permeable membrane, containing M+ ions at concentrations c2 on left and c1 on right, with X− counter ions in both compartments.

Consider the above electrochemical cell where a metal electrode (MM) is undergoing redox reaction by forming M+M^+ (M→M++e−M \to M^+ + e^-). The cation M+M^+ is present in two different concentrations c1c_1 and c2c_2 as shown above. Which of the following statement is correct for generating a positive cell potential?

  • A

    If c1c_1 is present at anode, then c1>c2c_1 > c_2.

  • B

    If c1c_1 is present at cathode, then c1>c2c_1 > c_2.

  • C

    If c1c_1 is present at anode, then c1=c2c_1 = c_2.

  • D

    If c1c_1 is present at cathode, then c1<c2c_1 < c_2.

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