If the mole fraction of solute in a solution is 0.4 what is the mole ratio of solute to solvent?
Answer and explanation
Correct answer: 2 to 3
In a binary solution, the mole fractions of solute and solvent add to one. Therefore, solvent mole fraction = 1 − 0.4 = 0.6. The required solute-to-solvent ratio is 0.4:0.6 = 4:6 = 2:3 after simplification. Hence option A is correct. Option B reverses the requested order, and options C and D do not represent the given fractions.
Frequently asked questions
What is the correct answer to this question?
2 to 3
Why is this the correct answer?
In a binary solution, the mole fractions of solute and solvent add to one. Therefore, solvent mole fraction = 1 − 0.4 = 0.6. The required solute-to-solvent ratio is 0.4:0.6 = 4:6 = 2:3 after simplification. Hence option A is correct. Option B reverses the requested order, and options C and D do not represent the given fractions.
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.
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