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Formation of C I F 3 from C l 2 and F 2 is an exothermic process. The equilibrium system can be represented as C l 2 ( g ) + 3 F 2 ( g ) ⇌ 2 C I F 3 ; Δ H = - 329 k J Which of the following will increase quantity of C I F 3 in the equilibrium mixture?

Options

  1. AIncrease in temperature, decrease in pressure, addition of C l 2
  2. BDecrease in temperature and pressure, addition of C I F 3
  3. CIncrease in temperature and pressure, removal of C l 2
  4. DDecrease in temperature, increase in pressure, addition of F 2

Correct answer

D. Decrease in temperature, increase in pressure, addition of F 2

Step-by-step solution

Using Le-chetelier principle the formation of C l F 3 is favoured by (i) Decrease in temperature as it is an exothermic reaction. (ii) Increase in pressure as volume is decreasing here. (iii) Increasing concentration of chlorine and fluorine.

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