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] =2and [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+C

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] =2and [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` `Delta G^(@)=-2.303 RT LOG K_(c )` `THEREFORE - 2.303 RT log K_(c ) = 2494.2` `-2.303xx8.314xx300 log K_(c ) = 2494.2` `log K_(c )=-(2494.2)/(2.303xx8.314xx300)=0.4342` `K_(c )=` antilog `(0.4342)=0.367` Now `[A]=(1)/(2), [B]=2`and`[C]=(1)/(2)` `Q_(c )=([C][B])/([A]^(2))=((1)/(2)xx2)/(((1)/(2))^(2))=4` Since `Q_(c )gt K_(c )`, reaction will SHIFT in backward direction.