If a solution contains 2 moles of solute and 8 moles of solvent, what is the mole fraction of solute?
Answer and explanation
Correct answer: 0.2
The mole fraction of a component is its number of moles divided by the total number of moles of all components. Here, total moles = 2 + 8 = 10 mol. Therefore, mole fraction of solute = 2/10 = 0.2, so option A is correct. The value 0.8 is the solvent mole fraction, while 2.0 cannot be a mole fraction because mole fractions range from 0 to 1.
Frequently asked questions
What is the correct answer to this question?
0.2
Why is this the correct answer?
The mole fraction of a component is its number of moles divided by the total number of moles of all components. Here, total moles = 2 + 8 = 10 mol. Therefore, mole fraction of solute = 2/10 = 0.2, so option A is correct. The value 0.8 is the solvent mole fraction, while 2.0 cannot be a mole fraction because mole fractions range from 0 to 1.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
