\"heat + CaSO 3 (s)<------>CaO(s) + SO 2 (g) deltaH=108kj Which change will caus

Question

"heat + CaSO3(s)<------>CaO(s) + SO2(g) deltaH=108kj

Which change will cause an increase in the pressure ofSO2 (g) when equilibrium is re-established?

a. decreasing the reaction pressure

b. adding some more CaSO3

c. increasing the reaction temperature

d. decreasing the volume of the container

e. removing some of the CaO(s) "

My question is, how come adding CaSO3 or removing CaO not produce more SO2. Should it not according to Chatelier's Principle. There was an answer to this question but I didn't understand their reasoning for why it was not b or e. I mean, for it to be C, you are still using Chatelier's Principle, the only difference is that the specie used in b or e are solid (heat is a specie in this rxn). Maybe the driving factor being solids does not change the pressure where as heat does? Please clarify.

Explanation / Answer

heat + CaSO3(s)<------>CaO(s) + SO2(g) deltaH=108kj

increase in the pressure o fSO2 (g) when equilibrium is re-established decreasing the volume of the container or decreases the reaction pressure.

answers. .a. decreasing the reaction pressure

               d. decreasing the volume of the container

pressure and volume are inversly proportional.When pressure is increases equlibrium shift to volume decreases side.

Adding CaSO3 and removal of Cao equlibrium shift to forward direction but not increase the pressure of Co2.

Forward reaction is edothermic reaction edothermic reaction takes place at high tempetature.

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.