If there are 0.5 mole solute and 1.5 moles solvent, what is the mole fraction of solute?
Answer and explanation
Correct answer: 0.25
The mole fraction of a component is its amount in moles divided by the total moles of the solution. Total moles = 0.5 + 1.5 = 2.0 mol. Therefore xsolute = 0.5 / 2.0 = 0.25, so option A is correct. The value 0.75 is the solvent mole fraction, 0.50 ignores the solvent, and 1.50 is outside the permitted 0–1 range.
Frequently asked questions
What is the correct answer to this question?
0.25
Why is this the correct answer?
The mole fraction of a component is its amount in moles divided by the total moles of the solution. Total moles = 0.5 + 1.5 = 2.0 mol. Therefore xsolute = 0.5 / 2.0 = 0.25, so option A is correct. The value 0.75 is the solvent mole fraction, 0.50 ignores the solvent, and 1.50 is outside the permitted 0–1 range.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
