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11th Standard English Medium Chemistry Subject Physical and Chemical Equilibrium Book Back 5 Mark Questions with Solution Part - I

11th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 25

    Part I

    5 x 5 = 25
  1. 1 mol of PCl5, kept in a closed container of volume 1 dm3 and was allowed to attain equilibrium at 423 K. Calculate the equilibrium composition of reaction mixture. (The Kc value for PCl5 dissociation at 423 K is 2)

  2. 1 mol of CH4, 1 mole of CS2 and 2 mol of H2S are 2 mol of H2 are mixed in a 500 ml flask. The equilibrium constant for the reaction KC = 4 x 10–2 mol2 lit–2. In which direction will the reaction proceed to reach equilibrium ?

  3. 28 g of Nitrogen and 6 g of hydrogen were mixed in a 1 litre closed container. At equilibrium 17 g NH3 was produced. Calculate the weight of nitrogen, hydrogen at equilibrium.

  4. A sealed container was filled with 1 mol of A2 (g), 1 mol B2 (g) at 800 K and total pressure 1.00 bar. Calculate the amounts of the components in the mixture at equilibrium given that K = 1 for the reaction
    A2 (g) + B2 (g) ⇌ 2AB (g)

  5. The partial pressure of carbon dioxide in the reaction
    CaCO3 (s) ⇌ CaO (s) + CO2(g) is 1.017 × 10–3 atm at 5000C. Calculate Kp at 6000C for the reaction. ΔH for the reaction is 181 KJ mol–1 and does not change in the given range of temperature.

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