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Chapter 26: Problem 9

Physical adsorption generally ___ with increasing temperature. (a) decreases (b) increases (c) sometimes decreases, sometime increases (d) none of these

Short Answer

Expert verified
(a) Decreases

Step by step solution

01

Understanding Physical Adsorption

Physical adsorption is a type of adsorption where substances stick to a surface because of van der Waals forces. This is usually a reversible and exothermic process.
02

Relation with Temperature

Increase in temperature usually provides kinetic energy to the molecules, causing them to move more and overcome the weak intermolecular forces, thereby decreasing the rate of physical adsorption.
03

Choosing the Correct Option

According to the above explanation on the impact of temperature on physical adsorption, it can be deduced that physical adsorption generally decreases with increasing temperature.

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Most popular questions from this chapter

Physical adsorption is a \(\quad\) process. (a) reversible (b) irreversible (c) exothermic (d) none of these

The process of adsorption is (a) exothermic (b) endothermic (c) sometimes exothermic, sometimes endothermic (d) none of the above

At low pressure, the amount of the gas adsorbed is ____ proportional to the pressure. (a) directly (b) inversely (c) sometimes directly, sometimes inversely (d) none of these

Multimolecular layers are formed in (a) adsorption (b) physical adsorption (c) chemisorption (d) reversible adsorption

Physical adsorption occurs rapidly at _____ temperature. (a) low (b) high (c) absolute zero (d) none of these
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