0.1 mole of sodium chloride is present in 500 mL of solution. What is the molarity?
Answer and explanation
Correct answer: 0.2 mole per litre
Molarity equals moles of solute divided by the volume of the final solution in litres. First convert 500 mL to litres: 500 mL = 0.5 L. Then M = 0.1 mol ÷ 0.5 L = 0.2 mol L⁻¹. Hence, option A is correct. Option B ignores the volume conversion, while C and D result from incorrect division or unit handling.
Frequently asked questions
What is the correct answer to this question?
0.2 mole per litre
Why is this the correct answer?
Molarity equals moles of solute divided by the volume of the final solution in litres. First convert 500 mL to litres: 500 mL = 0.5 L. Then M = 0.1 mol ÷ 0.5 L = 0.2 mol L⁻¹. Hence, option A is correct. Option B ignores the volume conversion, while C and D result from incorrect division or unit handling.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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