What is the molarity when 0.5 mol solute is dissolved in 500 mL of solution?
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Answer and explanation
Correct answer: 1 M
Molarity requires the solution volume in litres, so first convert 500 mL to 0.500 L. Then use M = n/V: M = 0.5 mol/0.500 L = 1.0 mol L⁻¹, or 1 M. Therefore option A is correct. Using 500 as though it were litres, or failing to convert millilitres, would produce an invalid result.
Frequently asked questions
What is the correct answer to this question?
1 M
Why is this the correct answer?
Molarity requires the solution volume in litres, so first convert 500 mL to 0.500 L. Then use M = n/V: M = 0.5 mol/0.500 L = 1.0 mol L⁻¹, or 1 M. Therefore option A is correct. Using 500 as though it were litres, or failing to convert millilitres, would produce an invalid result.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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