A reaction is spontaneous at low temperature but non-spontaneous at high temperature. Which of the following is true for the reaction?

Question

A reaction is spontaneous at low temperature but non-spontaneous at high temperature. Which of the following is true for the reaction? (A) Δ H > 0, Δ S > 0 (B) Δ H < 0, Δ S > 0 (C) Δ H > 0, Δ S = 0 (D) Δ H < 0, Δ S < 0

Tardigrade Admin · Accepted Answer

Correct answer is (d) Δ H < 0, Δ S < 0

Q. A reaction is spontaneous at low temperature but non-spontaneous at high temperature. Which of the following is true for the reaction?

$Δ H > 0, Δ S > 0$

$Δ H < 0, Δ S > 0$

$Δ H > 0, Δ S = 0$

$Δ H < 0, Δ S < 0$

$Δ H = 0, Δ S < 0$

Correct answer is (d) $Δ H < 0, Δ S < 0$

Q. A reaction is spontaneous at low temperature but non-spontaneous at high temperature. Which of the following is true for the reaction?

ΔH>0,ΔS>0

ΔH<0,ΔS>0

ΔH>0,ΔS=0

ΔH<0,ΔS<0

ΔH=0,ΔS<0