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Adsorption is accompanied by the evolution of heat. So according to Le-Chatelier principle, the amount of substance adsorbed should
  • a)
    Increase with decrease in temperature 
  • b)
    Increase with increase in temperature
  • c)
    Decrease with decrease in temperature
  • d)
    Decrease with increase in temperature
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Adsorption is accompanied by the evolution of heat. So according to Le...
According to Le -Chatelier's principle exothermic reactions are favoured at low temperature.
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Most Upvoted Answer
Adsorption is accompanied by the evolution of heat. So according to Le...
Explanation:

Le-Chatelier principle states that a system at equilibrium, when subjected to a stress, will adjust to minimize the effect of the stress and re-establish equilibrium.

Adsorption is an exothermic process, meaning it releases heat. Therefore, according to Le-Chatelier principle, the equilibrium will shift in a direction that will absorb the excess heat. This means that the amount of substance adsorbed will increase with a decrease in temperature.

In simple terms, reducing the temperature will cause the system to absorb heat, and adsorption is the way to do that. Therefore, the amount of substance adsorbed will increase at lower temperatures.

To summarize:

- Adsorption is an exothermic process that releases heat.
- According to Le-Chatelier principle, the equilibrium will shift in a direction that will absorb the excess heat.
- Therefore, the amount of substance adsorbed will increase with a decrease in temperature.
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