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Q.

Consider the following statement about the a equilibrium,
$2 {SO}_{2} (g) + O_{2} (g) ⇌ 2 {SO}_{3} (g); ΔH ° = - 198 kJ$
I. On decreasing the temperature as well as pressure equilibrium shifts in forward direction.
II. On increasing temperature and pressure equilibrium shifts in forward direction.
III. On decreasing the temperature and increasing the pressure, equilibrium will shift in forward direction.
Choose the correct option.

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a

I and II

b

Only II

c

Only III

d

I, II and III

answer is C.

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Detailed Solution

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$Δn = - ve$	$Δ H ° = - ve$
Takes place with decrease in nurnber of mole or volume ,hence increase in pressure shfits equilibrium in forward direction	Takes place with evolution of heat or increase in temperature, hence decrease in temperature shifts this equilibrium in forward direction

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Consider the following statement about the a equilibrium,2SO2( g)+O2(g)⇌2SO3(g);ΔH°=-198 kJI. On decreasing the temperature as well as pressure equilibrium shifts in forward direction.II. On increasing temperature and pressure equilibrium shifts in forward direction.III. On decreasing the temperature and increasing the pressure, equilibrium will shift in forward direction.Choose the correct option.