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9 January, 11:51

Onsider this reversible reaction:

PCl5 (g) + heat ↔ PCl3 (g) + Cl2 (g)

Which change to the system will cause equilibrium to shift right and produce more PCl3?

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Answers (2)
  1. 9 January, 12:21
    0
    You can shift the equilibrium to the right if you

    • Increase the concentration of PCl_5

    • Increase the temperature

    • Decrease the concentration of Cl_2

    • Decrease the total pressure of the system

    Decreasing the concentration of PCl_3 will shift the equilibrium to shift to the right, but there will be less PCl_3 at the new equilibrium.
  2. 9 January, 15:23
    0
    PCl₅ (g) + heat ↔ PCl₃ (g) + Cl₂ (g)

    On increasing the concentration of PCl5 (g), the equilibrium will shift in forward direction and produce more PCl₃.

    Explanation:

    According to Le Chatlier's Principle " If we apply any external stress on a system at equilibrium, the system minimize the effect by itself to regain equilibrium". In above reaction initially the system is in equilibrium. when we increase the concentration of reactant (PCl₅), the system goes to forward and produce more product (PCl₃).

    After some time reaction will go in backward direction to regain equilibrium position while consuming PCl₃ and Cl₂. Finally reaction will again in equilibrium position.
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