For a certain reaction the change in enthalpy and change in entropy are 40.63 kJ mol -1 and 100 JK -1 . What is the value of Δ G at 27° C and indicate whether the reaction is spontaneous or not-

Question

For a certain reaction the change in enthalpy and change in entropy are 40.63 kJ mol -1 and 100 JK -1 . What is the value of Δ G at 27° C and indicate whether the reaction is spontaneous or not- (A) +10630 J mol -1; spontaneous (B) +10630 J mol -1; non spontaneous (C) -7990 J mol -1; spontaneous (D) +7900 J mol -1; spontaneous

Tardigrade Admin · Accepted Answer

Δ G=Δ H-T Δ S, given T=27° C =273+27=300 =40.63 × 103-300 × 100 =10630 J / mole ; non-spontaneous.

Q. For a certain reaction the change in enthalpy and change in entropy are $40.63 k J m o l^{- 1}$ and $100 J K^{- 1} .$ What is the value of $Δ G$ at $2 7^{\circ} C$ and indicate whether the reaction is spontaneous or not-

$+ 10630 J m o l^{- 1}$ ; spontaneous

$+ 10630 J m o l^{- 1}$ ; non spontaneous

$- 7990 J m o l^{- 1}$ ; spontaneous

+7900 J mol $^{- 1}$ ; spontaneous

$Δ G = Δ H - T Δ S$ , given

$T = 2 7^{\circ} C = 273 + 27 = 300$

$= 40.63 \times 1 0^{3} - 300 \times 100$

$= 10630 J / m o l e;$ non-spontaneous.

Q. For a certain reaction the change in enthalpy and change in entropy are 40.63kJmol−1 and 100JK−1. What is the value of ΔG at 27∘C and indicate whether the reaction is spontaneous or not-

+10630Jmol−1; spontaneous

+10630Jmol−1; non spontaneous

−7990Jmol−1; spontaneous

+7900 J mol −1; spontaneous