How many moles of solute are present in 200 mL of a 1 M solution?
Answer and explanation
Correct answer: 0.2 mol
Molarity means moles of solute per litre of solution, so n = M × V. Convert the volume first: 200 mL = 0.200 L. Therefore n = 1 mol L⁻¹ × 0.200 L = 0.200 mol. Option A is correct. One mole would require 1 L of a 1 M solution, while 0.02 mol results from an incorrect conversion of millilitres.
Frequently asked questions
What is the correct answer to this question?
0.2 mol
Why is this the correct answer?
Molarity means moles of solute per litre of solution, so n = M × V. Convert the volume first: 200 mL = 0.200 L. Therefore n = 1 mol L⁻¹ × 0.200 L = 0.200 mol. Option A is correct. One mole would require 1 L of a 1 M solution, while 0.02 mol results from an incorrect conversion of millilitres.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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