QJEEM21Ch19a2: JEE Main 2021 Chemistry - Class 11 JEEM21Ch19a2 Solution: For a given chemical reaction A B at 300 K the free energy…

Question

Verified Solution • 2025–26 Session moderate

For a given chemical reaction A

\to

B at 300 K the free energy change is

-

49.4 kJ mol^{$-$ 1} and the enthalpy of reaction is 51.4 kJ mol^{$-$ 1}. The entropy change of the reaction is _____________ JK^{$-$ 1} mol^{$-$ 1}.

Accepted Answer

\Delta

G =

-

49.4 kJ/mol

\Delta

H = 51.4 kJ/mol

\Delta

G =

\Delta

H

-

T

\Delta

S

-

49400 = 51400

-

300

\Delta

S

\Delta S = {{ + 100800} \over {300}} = 336

JK^{$-$ 1} mol^{$-$ 1}

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