When enthalpy and entropy change for a chemical reaction are -2.5 × 103 cal and 7.4 cal deg -1 respectively. Predict that reaction at 298 K is

Question

When enthalpy and entropy change for a chemical reaction are -2.5 × 103 cal and 7.4 cal deg -1 respectively. Predict that reaction at 298 K is (A) spontaneous (B) reversible (C) irreversible (D) non-spontaneous

Tardigrade Admin · Accepted Answer

Δ G=Δ H-T Δ S Given Δ H=- ve and Δ S=+ ve. So Δ G must be negative, hence reaction will be spontaneous.

Q. When enthalpy and entropy change for a chemical reaction are $- 2.5 \times 1 0^{3}$ cal and $7.4 c a l d e g^{- 1}$ respectively. Predict that reaction at $298 K$ is

spontaneous

reversible

irreversible

non-spontaneous

$Δ G = Δ H - T Δ S$

Given $Δ H = -$ ve and $Δ S = +$ ve. So $Δ G$ must be negative, hence reaction will be spontaneous.

Q. When enthalpy and entropy change for a chemical reaction are −2.5×103 cal and 7.4caldeg−1 respectively. Predict that reaction at 298K is