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A solution contains 0.100 mol of NaCl dissolved in 8.60
Chapter 14, Problem 54P(choose chapter or problem)
Problem 54P
A solution contains 0.100 mol of NaCl dissolved in 8.60 mol of water, (a) What is the mole fraction of NaCl? (b) The mass percent? (c) The molality?
Questions & Answers
QUESTION:
Problem 54P
A solution contains 0.100 mol of NaCl dissolved in 8.60 mol of water, (a) What is the mole fraction of NaCl? (b) The mass percent? (c) The molality?
ANSWER:
Solution 54P:
Here, we are going to calculate the concentration of the solution in terms of concentration unit.
Step 1: (a)
Here, we have to calculate the mole fraction of NaCl
We know that,
Mole fraction = ----(1)
Given that,
Mole of NaCl (solute) =0.1 mol
Mole of water (solvent) = 8.60 mol
Therefore,
The mole fraction of NaCl=
=0.0115
Thus, the mole fraction of NaCl is 0.0115.