JAMB Chemistry 2009 Objective — Question 26

Question 26 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2009 Objective paper, with the correct answer and a full explanation.

Two equal bulbs, one containing ammonia and the other nitrogen, are opened mouth-to-mouth to each other at room temperature. The entropy in the mixture of gases is likely to

A. remain unchanged
B. increaseCorrect
C. decrease
D. change

Explanation

When gases are mixed (and the gases do not react), it is certain that the likelihood of finding a particular gas molecules in its original position will decrease i.e. the entropy (disorder) will increase.

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