Which option gives the most correct statement for mole fraction?
Answer and explanation
Correct answer: Ratio of moles of a component to total moles
The mole fraction of component i is defined as xᵢ = nᵢ/Σn, meaning the moles of that component divided by the total moles of every component in the mixture. It is a dimensionless quantity, and all component mole fractions add to one. Thus option A is correct. Option B describes a mass-per-volume concentration, while C and D are not definitions of mole fraction.
Frequently asked questions
What is the correct answer to this question?
Ratio of moles of a component to total moles
Why is this the correct answer?
The mole fraction of component i is defined as xᵢ = nᵢ/Σn, meaning the moles of that component divided by the total moles of every component in the mixture. It is a dimensionless quantity, and all component mole fractions add to one. Thus option A is correct. Option B describes a mass-per-volume concentration, while C and D are not definitions of mole fraction.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Some Basic Concepts of Chemistry. Topic: Mole concept and molar mass.
