GKFix MCQ Question

What is the value of the gas constant R used in the calculation of ∆U for water vaporization?

• A. 0.0821 L atm mol⁻¹ K⁻¹
• B. 8.314 J mol⁻¹ K⁻¹
• C. 8.3 J mol⁻¹ K⁻¹
• D. 1.987 cal mol⁻¹ K⁻¹