The molar mass of sodium chloride determined by osmotic pressure would be

A
$58.5 g {mol}^{- 1}$
B
more than $58.5 g {mol}^{- 1}$
C
less than $58.5 g {mol}^{- 1}$
D
$117 .0 g {mol}^{- 1}$

Solution:

In an aqueous solution, NaCl undergoes dissociation. The amplitude of the colliding property grows together with the amount of particles in the solution, while the molecular mass decreases.

Solution:

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