How many moles of solute are present in 100 mL of 0.1 molar solution?
Answer and explanation
Correct answer: 0.01 mole
Molarity is moles of solute per litre of solution, so the volume must be expressed in litres. Convert 100 mL to 0.100 L, then use n = M × V = 0.1 mol L⁻¹ × 0.100 L = 0.010 mol. Hence, option A is correct. Options B, C, and D result from failing to convert millilitres or applying the formula incorrectly.
Frequently asked questions
What is the correct answer to this question?
0.01 mole
Why is this the correct answer?
Molarity is moles of solute per litre of solution, so the volume must be expressed in litres. Convert 100 mL to 0.100 L, then use n = M × V = 0.1 mol L⁻¹ × 0.100 L = 0.010 mol. Hence, option A is correct. Options B, C, and D result from failing to convert millilitres or applying the formula incorrectly.
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.
