A solution has 10 percent solute by mass and total mass 500 g. What is the mass ratio of solute to solvent?
Answer and explanation
Correct answer: 1 to 9
Mass percent means solute mass divided by total solution mass, multiplied by 100. Solute mass = 10/100 × 500 g = 50 g. The solvent mass is 500 − 50 = 450 g. Hence the solute-to-solvent ratio is 50:450, which simplifies by 50 to 1:9. Option A is correct; 9:1 reverses the requested order.
Frequently asked questions
What is the correct answer to this question?
1 to 9
Why is this the correct answer?
Mass percent means solute mass divided by total solution mass, multiplied by 100. Solute mass = 10/100 × 500 g = 50 g. The solvent mass is 500 − 50 = 450 g. Hence the solute-to-solvent ratio is 50:450, which simplifies by 50 to 1:9. Option A is correct; 9:1 reverses the requested order.
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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