The reduction potential of hydrogen half-cell will be negative if

Engineering

Chemistry

Nernst Equation

Question

p(H₂) = 2 atm and [H⁺] = 1.0 M

p(H₂) = 1 atm and [H⁺] = 2.0 M

p(H₂) = 2 atm and [H⁺] = 2.0 M

p(H₂) = 1 atm and [H⁺] = 1.0 M

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2H⁺ (aq) + 2e^– → H² (g)

$E_{red} = E_{red}^{0} - \frac{0.0591}{n} \log \frac{P_{H_{2}}}{{(H^{+})}^{2}}$

$E_{red} = 0 - \frac{0.0591}{2} \log \frac{2}{{(1)}^{2}}$

$E_{red} = - \frac{0.0591}{2} \log 2$