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Concentration Terms

[A] stands fo...

Question

[A] stands for concentration of A in:

partial pressure

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mole fraction

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moles / litre

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equivalents / lit

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Solution

The correct option is A moles / litre
[A] represents the active mass of A. It is the concentration of A in terms of moles/litre.
The expression for the active mass is $Active mass = \frac{number of moles}{volume in litres}$ .

Hence, the correct option is C.

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