Calculate the entropy change for methanol at its normal boiling point of 64.5 °C.Δ_rH° = 38.0 kJ/mol. A)0.589 kJ/mol ∙ K B)0.112 kJ/mol ∙ K C)589 kJ/mol ∙ K D)112 kJ/mol ∙ K E)0.589 × 10^-2 kJ/mol ∙ K

Question

Quizplus · Accepted Answer

The entropy change (ΔS) at the boiling point can be calculated using the formula ΔS = ΔH/T, where ΔH is the enthalpy change and T is the temperature in Kelvin. Convert 64.5 °C to Kelvin (337.65 K) and use ΔH = 38.0 kJ/mol to find ΔS = 38.0 kJ/mol / 337.65 K = 0.112 kJ/mol ∙ K.

Calculate the Entropy Change for Methanol at Its Normal Boiling