Question

Indicate which direction the reaction at equilibrium should shift under the given conditions for the reaction...

Indicate which direction the reaction at equilibrium should shift under the given conditions for the reaction of PCl3(g) + Cl2(g) ⇌ PCl5(g).

addition of PCl3

addition of Cl2

addition of PCl5

removal of PCl3

removal of Cl2

removal of PCl5

decrease the volume of the container

addition of Ne

Indicate which direction the reaction at equilibrium should shift under the given conditions for the exothermic reaction of H2(g) + CO2(g) ⇌ H2O(g) + CO(g).

addition of CO2

addition of H2O

addition of H2

removal of H2

removal of CO2

removal of CO

Science   Chemistry   
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Homework Answers

Answer #1

PCl3(g) + Cl2(g) ⇌ PCl5(g)

Acccording to LeChateliers principle,

  • Addition of any of the reactant shifts the equilibrium to the right
  • Removal of any of the reactant shifts the equilibrium to the left
  • Addition of any of the product shifts the equilibrium to the left
  • Removal of any of the product shifts the equilibrium to the right
addition of PCl3 shifts to the right
addition of Cl2 shifts to the right
addition of PCl5 shifts to the left
removal of PCl3 shifts to the left
removal of Cl2 shifts to the left
removal of PCl5 shifts to the right
  • Decreasing the volume (or, increase in pressure) equilibrium shifts in the direction where there is less number of moles

For the given equilibrium moles of reactant = 2 and moles of product = 1

Thus, decrease in volume shifts the equilibrium to the right.

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