To a mixture containing pieces of \( \mathrm{Zn}, \mathrm{Cu} \) and silver, \( 1 \mathrm{M} \ma...

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To a mixture containing pieces of \( \mathrm{Zn}, \mathrm{Cu} \) and silver, \( 1 \mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4} \) was added. \( \mathrm{H}_{2} \) gas was found to be evolved. Which of the metal/metals do you think has/have reacted? \( \begin{array}{ll} \mathrm{E}_{\mathrm{Zn}^{+2} / \mathrm{Zn}}^{\mathrm{o}}=-0.76 \mathrm{~V} \quad \mathrm{E}_{\mathrm{Cu}^{+2} / \mathrm{Cu}}^{\mathrm{O}}=0.34 \mathrm{~V} \\ \mathrm{E}_{\mathrm{Ag}^{\mathrm{o} / \mathrm{Ag}}}=0.80 \mathrm{~V} \end{array} \)
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