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Which of the following satisfies the first derivative of adsorbtion isotherms?

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in Basic Chemical Engineering by (74.6k points)
Which of the following satisfies the first derivative of adsorbtion isotherms?

(a) Greater than 1

(b) Less than 1

(c) Equal to 1

(d) Cannot say

This question was posed to me in an internship interview.

My question is taken from Liquids and Gases in Equilibrium with Solids topic in portion Liquids and Gases in Equilibrium with Solids and Energy: Terminology, Concepts, and Units of Basic Chemical Engineering

1 Answer

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Best answer
Correct answer is (a) Greater than 1

The explanation: Since adsorbtion isotherms are always increasing, so their first derivative are always increasing.

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