Equilibrium

Equilibrium

Question

The exothermic formation of ClF3 is represented by the equation

Cl subscript 2 left parenthesis straight g right parenthesis space plus space 3 straight F subscript 2 space left parenthesis straight g right parenthesis space rightwards harpoon over leftwards harpoon with space space space space space space space on top space 2 ClF subscript 3 space left parenthesis straight g right parenthesis space semicolon space increment rH space equals negative 329 space kJ
Which of the following will increase the quantity of ClF3 in an equilibrium mixture of Cl2, F2 and ClF3?

  • Increasing the temperature

  • Removing Cl2

  • Increasing the volume of the container

  • Adding F2

Answer

D.

Adding F2

straight M subscript 3 straight V subscript 3 space equals space straight M subscript 1 straight V subscript 2 space plus space straight M subscript 2 straight V subscript 2
straight M space equals space fraction numerator 480 space left parenthesis 1.5 right parenthesis space plus space 520 space left parenthesis 1.2 right parenthesis over denominator 1000 end fraction space equals space 1.344 space straight M

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