Calculate $\Delta$ _rG ^$\circ$ for the Disproportionation Reaction of Cu⁺ at 25

question 25

Multiple Choice

Calculate $\Delta$ _rG ^$\circ$ for the disproportionation reaction of Cu⁺ at 25 ^$\circ$ C,
2 Cu⁺(aq) $\to$ Cu²⁺(aq) + Cu(s)
Given the following thermodynamic information.
Cu⁺(aq) + e^- $\to$ Cu(s) $~~~~~~~~$ E ^$\circ$ = +0.518 V
Cu²⁺(aq) + 2 e^- $\to$ Cu(s) $~~~~~~~~$ E ^$\circ$ = +0.337 V

• A) -165 kJ/mol.rxn
• B) -135 kJ/mol.rxn
• C) -34.9 kJ/mol.rxn
• D) +17.5 kJ/mol.rxn
• E) +135 kJ/mol.rxn

---

Definitions:

Portfolio Investment

Investments in a variety of financial assets, such as stocks, bonds, and commodities, to diversify risks.

Direct Investment

Refers to buying and holding a significant amount of interest in a foreign company or investing in a manner that grants control over the operations and management.

Securities

Securities that signify ownership in a company listed on the stock market, a debt owed by a corporation or government entity (bonds), or entitlements to ownership through options.

Exchange Rate

The price of one country's currency expressed in another country's currency; it determines how much one currency is worth in terms of another.