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11th Standard English Medium Chemistry Subject Thermodynamics Book Back 3 Mark Questions with Solution Part - I

11th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 15

    Part I

    5 x 3 = 15
  1. State the various statements of second law of thermodynamics.

  2. 30.4 kJ is required to melt one mole of sodium chloride. The entropy change during melting is 28.4 JK-1 mol-1. Calculate the melting point of sodium chloride.

  3. Calculate the enthalpy of hydrogenation of ethylene from the following data. Bond energies of C - H, C - C , C = C and H - H are 414, 347, 618 and 435 kJ mol-1

  4. The standard enthalpies of formation of SO2 and SO3 are -297 kJ mol-1 and -396 kJ mol-1 respectively. Calculate the standard enthalpy of reaction for the reaction: SO2 + \(\frac{1}{2}\)O2⟶SO3

  5. Find out the value of equilibrium constant for the following reaction at 298K; 2NH3(g)+ CO2(g) \(\rightleftharpoons \) NH2CONH2(aq) + H2O(I) Standard Gibbs energy change, \(\Delta { G }_{ r }^{ 0 }\) at the given temperature is -13.6 kJ mol-1.

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