Question

For the reaction \[\ce{A(g) -> B(g)}\], the value of equilibrium constant at 300 K and 1 atm is equal to 100.0. The value of Δ_rG for the reaction at 300 K and 1 atm in J mol⁻¹ is −xR, where x is ______. (Rounded-off to the nearest integer)

[R = 8.31 J mol⁻¹ K⁻¹ and ln 10 = 2.3]

Options

• 1380

• 1450

• − 1380

• 1050

Answer 1

For the reaction \[\ce{A(g) -> B(g)}\], the value of equilibrium constant at 300 K and 1 atm is equal to 100.0. The value of Δ_rG for the reaction at 300 K and 1 atm in J mol⁻¹ is −xR, where x is − 1380.

Explanation:

ΔG° = − RT × log K_eq

= − R × 300 × log 10²

= − 300 × 2.3 × 2R

= − 1380 R