The most favourable conditions of temperature and pressure for the oxidation of SO2 into SO3 are :

Foundation

Chemistry Foundation

Metals and Non Metals Compounds ans Uses

Question

The most favourable conditions of temperature and pressure for the oxidation of SO₂ into SO₃ are :

low temperature and low pressure.

high temperature and low pressure.

low temperature and high pressure.

high temperature and high pressure.

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$2 {SO}_{2} + O_{2} ⇌ {SO}_{3} + Heat$ Reaction is exothermic and volume decreases so at low temperature and high pressure more SO₃ will be formed.