Question

How many moles of solute are in a 0.50 L solution of 3.0 molarity?

• A. 1.5 moles solute
• B. 4.5 moles solute
• C. 6.0 moles solute
• D. There is not enough information to solve this problem.

Answer 1

The correct option is A 1.5 moles solute

3.0 M solution means presence of 3.0 moles of solute in 1.0 L of solution.
0.5 L of solution will contain $\frac{3.0\times 0.5}{1}=1.5$ moles of solute.