The unit of equilibrium constant of a chemical reaction is the same as that of__________________?

Related Mcqs:

1. Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is________________?

   A. 0
   B. 1
   C. ∞
   D. None of these

2. Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be___________________?

   A. Same
   B. Doubled
   C. Halved
   D. One fourth of its original value

3. At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?

   A. μ° + RT ln f
   B. μ°+ R ln f
   C. μ° + T ln f
   D. μ° + R/T ln f

4. In which of the following reaction equilibrium, the value of equilibrium constant Kp will be more than is Kc ?

   A. 2HI ⇌ H2 + I2
   B. N2O4 ⇌ 2NO2
   C. 2SO2 + O2 ⇌ 2SO3
   D. None of these

5. ____________ explains the equilibrium constant for any chemical reaction?

   A. Henry’s law
   B. Law of mass action
   C. Hess’s law
   D. None of these

6. The equilibrium constant for a chemical reaction at two different temperatures is given by__________________?

   A. Kp2/Kp1 = – (ΔH/R) (1/T2 – 1/T1)
   B. Kp2/Kp1 = (ΔH/R) (1/T2 – 1/T1)
   C. Kp2/Kp1 = ΔH (1/T2 – 1/T1)
   D. Kp2/Kp1 = – (1/R) (1/T2 – 1/T1)

7. The free energy change for a chemical reaction is given by (where, K = equilibrium constant)________________?

   A. RT ln K
   B. -RT ln K
   C. -R ln K
   D. T ln K

8. The reaction A (l) → R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The numbers of degrees of freedom are ?

   A. 1
   B. 2
   C. 3
   D. 0

9. For the gaseous phase chemical reaction, C2H4(g) + H2O(g) ↔ C2H5OH(g), the equilibrium conversion does not depend on the________________?

   A. Steam to ethylene ratio
   B. Temperature
   C. Pressure
   D. None of these

10. Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant ‘K’ is____________________?

    A. 10 atm-1
    B. 105 atm-1
    C. 10 (dimensionless)
    D. 105 (dimensionless)