• # question_answer Calculate the standard free energy change for the reaction. $2Ag+2{{H}^{+}}\xrightarrow{{}}{{H}_{2}}+2A{{g}^{+}}$ ${{E}^{o}}$ for $A{{g}^{+}}+c\xrightarrow{{}}Ag$is $0.80V$ A)  $+154.4\text{ }KJ$              B)  $+308.8\text{ }KJ$C)  $-154.4\text{ }KJ$       D)  $-308.8\text{ }KJ$

$\because$     $E_{cell}^{o}=0.80\,V$ $\Delta G=-nF\,{{E}^{o}}_{cell}$             $=-2\times 86500\times (-0.80)J=+154.4\,KJ$