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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Chemical Equilibrium

NTA Abhyas 2020 · Chemistry · Chemical Equilibrium

Consider the reaction equilibrium, 2S O_ 2 (g) + O_ 2 (g) ⇌ 2S O_ 3...

Consider the reaction equilibrium,

2\text{S}{\text{O}_{2}\left(\text{g}\right) + {\text{O}_{2}\left(\text{g}\right) ⇌ 2\text{S}{\text{O}_{3}\left(\text{g}\right);∆ \text{H} ° = - 198\text{k}\text{J}

On the basis of Le-Chatelier's principle, the condition favourable for the forward reaction is

Options

  1. ALowering of temperature as well as pressure
  2. BIncreasing temperature as well as pressure
  3. CLowering the temperature and increasing the pressure
  4. DAny value of temperature and pressure

Correct answer

C. Lowering the temperature and increasing the pressure

Step-by-step solution

∆n=−ve∆ \text{n} = - \text{v}\text{e}

∆H°=−ve∆ \text{H} ° = - \text{v}\text{e}

Takes place with decrease in number of mole or pressure, hence increase in pressure shifts equilibrium in forward side.

Takes place with evolution of heat or increase in temperature, hence decrease in temperature shifts this equilibrium in forward side.
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