Which of the following condition is not favourable for the feasibility of a reaction ?

Question

Which of the following condition is not favourable for the feasibility of a reaction ? (A) ΔH = +ve, TΔS = +ve and TΔS > ΔH (B) ΔH = -ve, TΔS = +ve (C) ΔH = -ve, TΔS = -ve and TΔS < ΔH (D) ΔH = +ve, TΔS = +ve and TΔS < ΔH

Tardigrade Admin · Accepted Answer

For a reaction to be feasible; its free energy must be negative ;

Δ G = Δ H - T Δ S = - v e

In all three cases

(a, b, c), Δ G

is negative but in option

(d)

,

Δ G

is positive which is not favourable for the feasibility of the reaction.

Q. Which of the following condition is not favourable for the feasibility of a reaction ?

$Δ H = + v e, T Δ S = + v e$ and $T Δ S > Δ H$

$Δ H = - v e, T Δ S = + v e$

$Δ H = - v e, T Δ S = - v e$ and $T Δ S < Δ H$

$Δ H = + v e, T Δ S = + v e$ and $T Δ S < Δ H$

For a reaction to be feasible; its free energy must be negative ;
$Δ G = Δ H - T Δ S = - v e$
In all three cases $(a, b, c), Δ G$ is negative but in option $(d)$ , $Δ G$ is positive which is not favourable for the feasibility of the reaction.

Q. Which of the following condition is not favourable for the feasibility of a reaction ?

ΔH=+ve,TΔS=+ve and TΔS>ΔH

ΔH=−ve,TΔS=+ve

ΔH=−ve,TΔS=−ve and TΔS<ΔH

ΔH=+ve,TΔS=+ve and TΔS<ΔH

For a reaction to be feasible; its free energy must be negative ; ΔG=ΔH−TΔS=−ve In all three cases (a,b,c),ΔG is negative but in option (d), ΔG is positive which is not favourable for the feasibility of the reaction.

$Δ H = + v e, T Δ S = + v e$ and $T Δ S > Δ H$

$Δ H = - v e, T Δ S = + v e$

$Δ H = - v e, T Δ S = - v e$ and $T Δ S < Δ H$

$Δ H = + v e, T Δ S = + v e$ and $T Δ S < Δ H$

For a reaction to be feasible; its free energy must be negative ;
$Δ G = Δ H - T Δ S = - v e$
In all three cases $(a, b, c), Δ G$ is negative but in option $(d)$ , $Δ G$ is positive which is not favourable for the feasibility of the reaction.