Standard Gibbs energy change in $\mathrm{kJ} \mathrm{mol}^{-1}$ for a galvanic cell $\mathrm{A}_{(\mathrm{s})}+\mathrm{B}_{(\mathrm{aq})}^{3+} \longrightarrow \mathrm{A}_{(\mathrm{aq})}^{3+}+\mathrm{B}_{(\mathrm{s})}$ that has standard emf of $0.5 \mathrm{~V}$ is : $\left(\mathrm{F}=96500 \mathrm{C} \mathrm{mol}^{-1}\right)$

• A

  -193.50
• B

  -96.50
• Correct answer
  C

  -144.75
• D

  -289.50

Hence, the correct answer is option: 'C'.