Calculate the mole fraction of nitric acid of an 8.37% (by mass)aqueous solution of nitric acid.
A)0.0199
B)0.0203
C)0.0398
D)0.00995
E)The density of the solution is needed to solve the problem.

Question

Quizplus · Accepted Answer

The mole fraction of nitric acid can be calculated using the formula:Mole fraction of nitric acid = (Mass of nitric acid / Molar mass of nitric acid) / (Mass of solution / Molar mass of water)Given:Mass of nitric acid = 8.37% of 100 g = 8.37 gMolar mass of nitric acid = 63 g/molMass of solution = 100 gMolar mass of water = 18 g/molSubstituting these values into the formula, we get:Mole fraction of nitric acid = (8.37 g / 63 g/mol) / (100 g / 18 g/mol) = 0.0199Therefore, the mole fraction of nitric acid is 0.0199.

Calculate the Mole Fraction of Nitric Acid of an 8