The mole fraction of solute is 0.1. If total moles are 40, how many moles of solvent are present?
Answer and explanation
Correct answer: 36 mol
Mole fraction is defined as the moles of a component divided by the total moles of the solution. Thus solute moles = 0.1 × 40 = 4 mol. Assuming the solution contains only solute and solvent, solvent moles = total moles − solute moles = 40 − 4 = 36 mol. Therefore option A is correct; 4 mol is the solute amount, not the solvent amount.
Frequently asked questions
What is the correct answer to this question?
36 mol
Why is this the correct answer?
Mole fraction is defined as the moles of a component divided by the total moles of the solution. Thus solute moles = 0.1 × 40 = 4 mol. Assuming the solution contains only solute and solvent, solvent moles = total moles − solute moles = 40 − 4 = 36 mol. Therefore option A is correct; 4 mol is the solute amount, not the solvent amount.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
