A 200 g solution contains 25 percent solute by mass. What is the mass of solute?
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Answer and explanation
Correct answer: 50 g
A 25% by mass solution contains 25 g solute in every 100 g solution. For 200 g solution, calculate 25/100 × 200 = 50 g. The percentage applies to the total solution mass, not to the solvent mass. The remaining 150 g would be the solvent if the solution contains only one solute and one solvent.
Frequently asked questions
What is the correct answer to this question?
50 g
Why is this the correct answer?
A 25% by mass solution contains 25 g solute in every 100 g solution. For 200 g solution, calculate 25/100 × 200 = 50 g. The percentage applies to the total solution mass, not to the solvent mass. The remaining 150 g would be the solvent if the solution contains only one solute and one solvent.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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