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Chemical equilibrium — Question 9

QCAA 2020, Paper 1 · 1 mark

Q9 · 2020 · Paper 1Unclassified1 mark

QUESTION 9

Phosgene gas (COCI,) is formed by the following reaction.

CO(g)+Cl(g)=COCL(g)AH=−110kJmol!CO(g) + Cl(g) = COCL(g) AH =-110 kJ mol!

Which of the following statements is true for the system at equilibrium?

(A) Removing Cl,(g) will increase the yield of phosgene and keep the K, value constant.

(B) Adding a catalyst will increase the yield of phosgene and keep the K, value constant.

(C) Increasing the pressure will increase the yield of phosgene and keep the K, value constant.

(D) Decreasing the temperature will decrease the yield of phosgene and keep the K, value constant.

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