A solution has 8 percent mass percent of solute and total solution mass is 250 g. What is the mass of solvent?
Answer and explanation
Correct answer: 230 g
Mass percent means that the solute mass is 8/100 of the total solution mass. Thus, solute mass = (8/100) × 250 g = 20 g. A solution contains solute plus solvent, so solvent mass = total mass − solute mass = 250 − 20 = 230 g. Therefore option A is correct. Option B is only the solute mass, while option C ignores the solute and option D comes from subtracting 8 g instead of 20 g.
Frequently asked questions
What is the correct answer to this question?
230 g
Why is this the correct answer?
Mass percent means that the solute mass is 8/100 of the total solution mass. Thus, solute mass = (8/100) × 250 g = 20 g. A solution contains solute plus solvent, so solvent mass = total mass − solute mass = 250 − 20 = 230 g. Therefore option A is correct. Option B is only the solute mass, while option C ignores the solute and option D comes from subtracting 8 g instead of 20 g.
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.
