Given the Following Two Half-Reactions,write the Overall Balanced Reaction in the Direction

question 39

Multiple Choice

Given the following two half-reactions,write the overall balanced reaction in the direction in which it is spontaneous and calculate the standard cell potential.
$\begin{array}{ll}\mathrm{Ga}^{3+}(a q) +3 e^{-} \rightarrow \mathrm{Ga}(s) & E_{\mathrm{red}}^{\circ}=-0.53 \mathrm{~V} \\\mathrm{Sn}^{4+}(a q) +2 e^{-} \rightarrow \operatorname{Sn}^{2+}(a q) & E_{o x}^{\circ}=+0.15 \mathrm{~V} \\\end{array}$

• A) 2Ga³⁺(aq)+ 3Sn²⁺(aq)? 2Ga(s)+ 3Sn⁴⁺(aq)E° = +0.68 V
• B) 3Ga³⁺(aq)+ 2Sn²⁺(aq)? 3Ga(s)+ 2Sn⁴⁺(aq)E° = -1.89 V
• C) 2Ga(s)+ 3Sn⁴⁺(aq)? 2Ga³⁺(aq)+ 3Sn²⁺(aq)E° = +0.68 V
• D) 3Ga(s)+ 2Sn⁴⁺(aq)? 3Ga³⁺(aq)+ 2Sn²⁺(aq)E° = +0.38 V
• E) 2Ga(s)+ 3Sn⁴⁺(aq)? 2Ga³⁺(aq)+ 3Sn²⁺(aq)E° = +1.89 V

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