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Standard EMF of the given cell; \( \mathrm{A}_{(\mathrm{s})} \)
P \( \mathrm{A}^{2+}{ }_{(\mathrm{aq})} \| \mathrm{B}^{2+}{ }_{(\mathrm{aq})} \mid \mathrm{B}_{(\mathrm{s})} \). Given \( \mathrm{E}_{\mathrm{A} / \mathrm{A}^{2+}}^{\mathrm{o}}:+1.4 \mathrm{~V} \)

W and \( \mathrm{E}_{\mathrm{B} / \mathrm{B}^{2+}}^{\mathrm{o}}:-1.4 \mathrm{~V} \)
(1) \( 2.8 \mathrm{~V} \)
(2) \( 1.8 \mathrm{~V} \)
(3) \( 0 \mathrm{~V} \)
(4) \( -1.8 \mathrm{~V} \)
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