Consider the reaction equilibrium,
`2SO_(2(g))+ O_(2(g)) Leftrightarrow 2SO_(3(g)), triangleH^@=-198kJ`
On the basis of Le Chatelier's principle, the condition favourable for the forward reaction is,

Options

A. lowering of temperature as well as pressure
B. increasing of temperature as well as pressure
C. lowering of temperature and increasing of pressure
D. any value of temperature and pressure.

Answer

C

Explanation

`2SO_(2(g)) +O_(2(g)) Leftrightarrow 2SO_(3(g)) , triangleH^@=-198kJ`
The reaction is exothermic and accompanied with decrease in number of inoles. Hence the forward reaction is favoured by lowering of temperature and increasing of pressure.