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Physical and Chemical Equilibrium Two Marks Questions

11th Standard

    Reg.No. :
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Chemistry

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. If there is no change in concentration, why is the equilibrium state considered dynamic?

  2. For a given reaction at a particular temperature, the equilibrium constant has constant value. Is the value of Q also constant? Explain.

  3. What is the relation between KP and KC. Give one example for which KP is equal to KC.

  4. Consider the following reactions,
    H2(g) + I2(g) ⇌ 2 HI(g)
    In each of the above reaction find out whether you have to increase (or) decrease the volume to increase the yield of the product.

  5. State law of mass action.

  6. Explain how will you predict the direction of a equilibrium reaction.

  7. Write a balanced chemical equation for  equilibrium reaction for which the equilibrium constant is given by expression
    \(K_c={[NH_3]^4[O_2]^5\over [NO]^4[H_2O]^6}\)

  8. What is the effect of added inert gas on the reaction at equilibrium at constant volume.

  9. Deduce the Vant Hoff equation.

  10. The following concentration were obtained for the formation of NH3 from N2 and H2 at equilibrium for the reaction \({ N }_{ 2g }+3{ H }_{ 2\left( g \right) }\rightleftharpoons { { 2NH }_{ 3\left( g \right) } }\)
    [N2] = 1.5 x 10-2M; [H2]= 3.0 x 10-2M;
    [NH3] = 1.2 x 10-2M
    Calculate the equilibrium constant.

  11. Write the relationship between equilibrium constant and enthalpy.

  12. Explain the state of equilibrium based on the following illustrations.
    (i) See-saw
    (ii) Tug of war

  13. Why are the reversible processes non-static?

  14. "Rate of Melting = Rate of freezing"
    When is the above condition achieved? Explain with an example

  15. How will you arrive at the unit of equilibrium constant?

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