A solution is made from 15 g solute and 85 g solvent. What is the mass fraction of solute?
Answer and explanation
Correct answer: 0.15
Mass fraction is defined as the mass of the chosen component divided by the total mass of the solution. Here, total mass = 15 g + 85 g = 100 g. Thus, solute mass fraction = 15 ÷ 100 = 0.15, so option A is correct. Option B is the solvent fraction, option C is not a valid fraction because it exceeds 1, and option D results from shifting the decimal incorrectly.
Frequently asked questions
What is the correct answer to this question?
0.15
Why is this the correct answer?
Mass fraction is defined as the mass of the chosen component divided by the total mass of the solution. Here, total mass = 15 g + 85 g = 100 g. Thus, solute mass fraction = 15 ÷ 100 = 0.15, so option A is correct. Option B is the solvent fraction, option C is not a valid fraction because it exceeds 1, and option D results from shifting the decimal incorrectly.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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