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5/27 MCQs for:
MATTER: PROPERTIES AND TRANSFORMATION: Reversible Reactions

A reversible reaction is represented by the sign:

A reversible reaction is said to have attained equilibrium when:

Sulphur dioxide and oxygen combine reversibly to produce sulphur trioxide in presence of vanadium (V) oxide as a catalyst.

2SO2 (g) + O2 (g) ⇌ 2SO3 (g)         ∆H = -197 KJ/mol

Choose the correct statement(s) below concerning the above process:

Consider the following reaction system in equilibrium:
2SO2 (g) + O2 (g) ⇌ 2SO3 (g)           ∆H=-197KJmol⁻¹ 
According to Le Chatelier’s principle, if the temperature is increased.

Consider the following systems in equilibrium:

N2 (g) (1 mole) + 3H2 (g)(3 moles) ⇌ 2NH3 (g) (2 moles) ---------------------- (1)

For system (1):