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Does the activity coefficient increase infinitely if the concentration is very high?

Does the activity coefficient increase infinitely if the concentration is very high?
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Answer #1

ANSWER:

Activity of any solute in a solution is related as

where [a] is activity of solute.

is activity coefficient of solute.

c is concentration of solute.

Here, Activity coefficient is dependend on several factors-

1. concentration of ions of solute and charge in the solution.

2. charge on the ion.

3. diameter of the ion.

According to the above formula activity coefficient is inversely proportional to concentration. This means on increasing the concentration, activity coefficient decreases.

Activity coefficient 1 if concentration0. Thus increasing the concentration will decrease the activity coefficient of solute.

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