Question: What is the molarity of a solution if 2 moles of solute are dissolved in 4 liters of solution?

Options:

1. 0.5 M
2. 1 M
3. 2 M
4. 4 M

Correct Answer: 1 M

Solution:

Molarity (M) = moles of solute / liters of solution = 2 moles / 4 L = 0.5 M.