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Chemical Equilibrium Test - 6
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Chemical Equilibrium Test - 6
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  • Question 1/3
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    For reaction A2 ⇌ A

    The value of equilibrium constant (K) at 500 K is 1 x 10-7 and at 700 K is 3.36 x 10-7. The given reaction is a/an

    Solutions

    For endothermic reaction value of equilibrium constant increases with increase with temperature. As the value of K increases with increase in temperature, therefore, given reaction is endothermic in nature.

     

  • Question 2/3
    1 / -0

    A vessel contains three gases H2, I2 and HI at equilibrium, He gas is introduced in the vessel so that the total pressure increases but the temperature and volume remain constant. According to Le-Chaltelier's Principle, the dissociation of HI will

    Solutions

    Helium gas is an inert gas. The equilibrium is not effected by the addition of an inert gas at a constant volume as the concentration of the reactants and products does not change.
    Since there is no change in the number of gaseous moles in the given reaction;
    H2(g) + I2(g) ⇌ 2HI(g)
    The equilibrium is not effected even on the addition of an inert gas at a constant pressure.

     

  • Question 3/3
    1 / -0

    For which of the following gaseous equilibria, at a constant temperature, doubling the volume would cause a shift of equilibrium to the right?

    Solutions

    Doubling the volume would reduce the pressure and shift the equilibrium in the direction of increasing gaseous moles.
    PCl5(g) ⇌ PCl3(g) + Cl2(g)
    The above reaction proceeds with the increase in the number of gaseous moles.

     

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