The standard Gibbs energy change at 300 K for the reaction 2A hArr B+ C is 2494.2 J. At a given time, the composition of the reaction mixture is [A] = (1)/(2), [B]=2 and [C]= (1)/(2). The reaction proceeds in the : [R= 8.314 "J/K/mol", e=2.718]

The standard Gibbs energy change at 300 K for the reaction 2A hArr B+

1.	The standard Gibbs energy change at 300 K for the reaction 2A hArr B+ C is 2494.2 J. At a given time, the composition of the reaction mixture is [A] = (1)/(2), [B]=2 and [C]= (1)/(2). The reaction proceeds in the : [R= 8.314 "J/K/mol", e=2.718]
Answer» forward direction because `Q gt K_C` reverse direction because `Q gt K_C` forward direction because `Q lt K_C` reverse direction because `Q lt K_C` Solution :`2A HARR B+ C, Delta G^(@) =2494.2` J `RARR-0.434 = LOG K_C` `rArr K_c = "antilog" (-0.434)` `rArr K_c = 0.367` Now, `[A] = (1)/(2) , [B] =2 and [C] = (1)/(2)` Now, `Q_C = ([C] [B])/( [A]^(2) ) = (((1)/(2)) (2) )/( ((1)/(2))^(2) )= 4` As `Q_cgt K_c`, hence reaction will shift in backward direction.