Year 12s: what will be the first way you research your future options? >>

Organic chemistry Have I done this right ?

PCl₅(g) ↔ PCl₃ (g) + Cl₂ (g) DH⁰ = 87.9 kJ

How will the following affect the above equilibrium?
a) increasing the concentration of PCl₅
Equilibrium position shifts to the right. PCl₅=decreases PCl₃and CL₂ increases.
b) decreasing the concentration of Cl₂
Equilibrium position shifts to the right. PCl₅=decreases CL₂ increases.
c) increasing the temperature would cause the reaction to favour the endothermic reaction ( which is the favoured reaction) to minimise change in temperature.

d) Increasing the size of the reaction vessel would cause the pressure to decrease. There are more moles of gas on the RHS of the equation. So the equilibrium position shifts to the right to make more moles of gas so that the pressure doesn’t change when the vessel size is increased.
e) adding a catalyst wouldn’t affect the equilibrium position