APFIVE Which statement best describes how the standard enthalpy change (ΔH°) and standard entropy change (ΔS°) together determine the spontaneity of a chemical reaction at various temperatures?
The reaction’s spontaneity is solely determined by the magnitude of ΔH°, regardless of temperature or entropy changes.
The reaction’s spontaneity is always determined by the sign of ΔS°, with temperature only affecting the rate of the reaction.
The reaction’s spontaneity is inversely proportional to temperature, with ΔS° becoming less significant at higher temperatures.
The reaction’s spontaneity depends on the balance between ΔH° and TΔS°, with temperature determining which term dominates in the Gibbs free energy equation.
Question Leaderboard
Not enough data yet to show leaderboard.