In case of the decomposition of hydroiodic acid (2HI ⇌ H2 + I2), addition of H2 (at equilibrium condition) will__________________?

Related Mcqs:

1. In the reaction, H2 +I2 ⇌ 2HI, addition of an inert gas will___________________?

   A. Increase the partial pressure of H2
   B. Increase the partial pressure of I2
   C. Increase the total pressure and hence shift the equilibrium towards the right
   D. Not affect the equilibrium conditions

2. A solution which resists change in its pH value on addition of acid/alkali is called the ____________________ solution?

   A. Neutral
   B. Ideal
   C. Buffer
   D. Zero pH

3. The necessary condition for phase equilibrium in a multiphase system of N components is that the____________________?

   A. Chemical potentials of a given component should be equal in all phases
   B. Chemical potentials of all components should be same in a particular phase
   C. Sum of the chemical potentials of any given component in all the phases should be the same
   D. None of these

4. 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

5. The necessary and sufficient condition for equilibrium between two phases is_________________?

   A. The concentration of each component should be same in the two phases
   B. The temperature of each phase should be same
   C. The pressure should be same in the two phases
   D. The chemical potential of each component should be same in the two phases

6. 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

7. “When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change.” This is called the_______________?

   A. Le-Chatelier principle
   B. Kopp’s rule
   C. Law of corresponding state
   D. Arrhenius hypothesis

8. 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

9. 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

10. Heat requirement for decomposition of a compound into its elements is _____________ that is evolved during the formation of that compound from its elements?

    A. The same
    B. Less than
    C. Greater than
    D. Different than