Discussion
What is the term used to refer to 'the ratio of the number of moles of a particular component to the total number of moles of the solution' ?
Answer: C
The term is mole fraction.
The mole fraction of a component is the number of moles of that component divided by the total number of moles of all components in the solution:
\[ x_A = \frac{n_A}{n_A + n_B + \cdots} \]
Molarity is moles of solute per litre of solution, molality is moles of solute per kilogram of solvent, and mass percent is the mass of a component as a percentage of the solution's mass.
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