0.1 mole solute is present in 100 mL solution. What is the molarity?
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Answer and explanation
Correct answer: 1.0 mole per litre
Molarity is the number of moles of solute per litre of solution. First convert the volume: 100 mL = 0.100 L. Then M = n/V = 0.1 mol / 0.100 L = 1.0 mol L⁻¹. Therefore option A is correct. The conversion from millilitres to litres is essential; using 100 directly would produce an invalid concentration.
Frequently asked questions
What is the correct answer to this question?
1.0 mole per litre
Why is this the correct answer?
Molarity is the number of moles of solute per litre of solution. First convert the volume: 100 mL = 0.100 L. Then M = n/V = 0.1 mol / 0.100 L = 1.0 mol L⁻¹. Therefore option A is correct. The conversion from millilitres to litres is essential; using 100 directly would produce an invalid concentration.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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