
(a)
Interpretation:
Whether a decrease in activity coefficient observed due to increase in ionic strength is true statement or not has to be identified.
Concept Introduction:
For equilibrium as indicated below,
Law of mass action states that for such equilibrium that involves solutions and gases expression of equilibrium constant in principle is written in accordance with law of mass action as follows:
Here,
To account for changed ionic atmosphere of various species concentration terms are include concept of activities. Activity is defined as product of concentration times the activity coefficient. Thus expression of equilibrium constant is then written as follows:
(b)
Interpretation:
Whether a decrease in activity coefficient observed due to increase in ionic charge is true statement or not has to be identified.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Whether a decrease in activity coefficient observed due to decrease in hydrated size is true statement or not has to be identified.
Concept Introduction:
Refer to part (a).

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Chapter 12 Solutions
Exploring Chemical Analysis
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