What does it mean if the mole fraction of a component is 0?
Answer and explanation
Correct answer: That component is absent
The mole fraction is defined as xᵢ = nᵢ/n_total, where nᵢ is the amount of the selected component and n_total is the total amount of all components. For a nonzero total amount, xᵢ can equal zero only when nᵢ = 0. Thus the component is absent. A pure component has mole fraction 1, not 0, so option A is correct.
Frequently asked questions
What is the correct answer to this question?
That component is absent
Why is this the correct answer?
The mole fraction is defined as xᵢ = nᵢ/n_total, where nᵢ is the amount of the selected component and n_total is the total amount of all components. For a nonzero total amount, xᵢ can equal zero only when nᵢ = 0. Thus the component is absent. A pure component has mole fraction 1, not 0, so option A is correct.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
