ThermodynamicsEasy
Question
The standard Gibbs energy change at 300 K for the reaction 2A ⇋ B + C is 2494.2J. 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]
Options
A.forward direction because Q < Kc
B.reverse direction because Q < Kc
C.forward direction because Q > Kc
D.reverse direction because Q > Kc
Solution
ᐃGo = –RT ln Keq
⇒ 2494.2 = −8.314 × 300 ln Keq
⇒ Keq =
Now for reaction ⇒ 2A ⇒ B + C
Q =
=
= 4
∴ Q > Kc, hence reverse direction
⇒ 2494.2 = −8.314 × 300 ln Keq
⇒ Keq =
Now for reaction ⇒ 2A ⇒ B + C
Q =
=
= 4∴ Q > Kc, hence reverse direction
Create a free account to view solution
View Solution FreeMore Thermodynamics Questions
Standard enthalpy of vaporisation ᐃvapHo for water at 100oC is 40.66 kJ mol-1. The internal energy of vaporisation...The work done in an adiabatic change of fixed amount of an ideal gas depends on change in...Ethyl chloride(C2H5Cl), is prepared by reaction of ethylene with hydrogen chloride : C2H4 (g) + HCl (g) → C2H5Cl (...If all the following gases are in monoatomic form, then which of the following has greater entropy?...One mole of oxygen is heated from 0°C at constant pressure till its volume is increased by 10%. The specific heat of oxy...