Verified Solution • 2025–26 Session moderate

QNEET-2023-Ch-183: NEET 2023 Chemistry - Class 11 NEET-2023-Ch-183 Solution: The equilibrium concentrations of the species in the reaction…

The equilibrium concentrations of the species in the reaction

A+B \rightleftharpoons C+D

are 23 10 and 6 mol

L^{-1}

respectively at 300 K.

\Delta G^\circ

for the reaction is (R=2 cal/mol K) -137.26 cal -1381.80 cal -13.73 cal 1372.60 cal

Multiple Choice Options

A $-137.26 ~\mathrm{cal}$ _ 137.26 cal
B $-1381.80 ~\mathrm{cal}$ _ 1381.80 cal
C $-13.73 ~\mathrm{cal}$ _ 13.73 cal
D $1372.60 ~\mathrm{cal}$ 1372.60 cal

Step-by-Step Verified Solution

A + B _ C + D [ A ] = 2 mol L _ 1 [ B ] = 3 mol L _ 1 [ C ] = 10 mol L _ 1 [ D ] = 6 mol L _ 1 _ G 0 = _ 2.303 RT log _ K eq = _ 2.303 RT log _ [ C ] [ D ] [ A ] [ B ] = _ 2.303 _ 2 _ 300 _ log _ 10 _ 6 2 _ 3 = _ 2.303 _ 2 _ 300 _ log _ 10 = _ 1381.8 cal

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