Question

The standard Gibbs energy change at 300 K for the reaction `2AhArrB+Cis 2494.2 J.` At a given time, the composition of the reaction mixture is `[A]=1/2,[B]=2and [C]=1/2.` The reaction proceeds in the: `[R=8.314J//Kmol, e=2.718]`
A. Forward diraction because `QgtK_(C)`
B. Reverse direction because `QgtK_(C)`
C. Forward directin because `QltK_(C)`
D. Reverse direction because `QltK_(C)`

Answer 1

Correct Answer - B
`DeltaG=DeltaG^(@)+RT ln Q`
`=2494.2+8.314xx300ln4`
= positive
`DeltaG=RTln""Q/K`
Since, `DeltaG` is positive so, `QgtK,` so reaction shifts in reverse direction.