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12th Standard English Medium Chemistry Subject Chemical Kinetics Book Back 5 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Chemistry

Time : 01:00:00 Hrs
Total Marks : 25

    Part I

    5 x 5 = 25
  1. How do nature of the reactant influence rate of reaction.

  2. The half life of the homogeneous gaseous reaction SO2Cl2 → SO2 + Cl2 which obeys first order kinetics is 8.0 minutes. How long will it take for the concentration of SO2Cl2 to be reduced to 1% of the initial value?

  3. A zero order reaction is 20% complete in 20 minutes. Calculate the value of the rate constant. In what time will the reaction be 80% complete?

  4. A first order reaction is 40% complete in 50 minutes. Calculate the value of the rate constant. In what time will the reaction be 80% complete?

  5. Rate constant k of a reaction varies with temperature T according to the following Arrhenius equation  \(\log K=\log A-\frac { { E }_{ a } }{ 2.303R } \left( \frac { 1 }{ T } \right) \)Where Ea is the activation energy. When a graph is plotted for log k Vs \(\frac{1}{T}\) a straight line with a slope of -4000K is obtained. Calculate the activation energy.

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