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1. Why are substances like platinum and palladium often used for carrying out electrolysis of aqueous solutions?

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2. Why does physisorption decrease with the increase of temperature?

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3. Why are powdered substances more effective adsorbents than their crystalline forms?

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Answer:

Presence of CO in the synthesis of ammonia by Haber’s process adversely affects the activity of iron catalyst.

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5. Why is the ester hydrolysis slow in the beginning and becomes faster after sometime?

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6. What is the role of desorption in the process of catalysis?

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8. Why is it essential to wash the precipitate with water before estimating it quantitatively?

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9. What is adsorption?

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10. What do you mean by adsorbent and adsorbate?

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