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The synthesis of Sulphuric acid by thr contact process employs the following equilibrium step as...

The synthesis of Sulphuric acid by thr contact process employs the following equilibrium step as one of its stages:

2SO2(g) O2(g) ⏪- - ⏩ 2SO3(g) - 🔼H.

Which of the following conditions promotes the backward reaction?

A

Increased pressure and decreased temperature

B

Increased pressure, increased temperature and the presence of catalyst

C

Decreased pressed, decreased concentration of oxygen and increased temperature

D

Decreased pressure, increased concentration of oxygen and increased temperature

E

Decreased pressure, decreased concentration of oxygen and decreased temperature

please someone should help me out here I think it is (b) but the past questions I have got is saying otherwise 🤲?

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