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Le Chatelier's Principle for Del N Equals to 0

For the equil...

Question

For the equilibrium, the equilibrium concentration of $S O_{3}$ will be affected by:
$2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g), Δ H = - 198 k J$ ,

doubling the volume of the reaction vessel

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increasing the temperature at constant volume

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adding more oxygen to the reaction vessel

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adding helium to the reaction vessel at constant volume

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Solution

The correct options are
A doubling the volume of the reaction vessel
C increasing the temperature at constant volume
D adding more oxygen to the reaction vessel
Doubling the volume of the reaction vessel and adding more oxygen to the reaction vessel will change the concentrations and will affect equilibrium concentrations. Increasing the temperature at constant volume will affect too because reaction is exothermic. Adding helium only changes the total pressure but not the partial pressure of the gaseous substances.

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