Which of the following calculations would give you the molarity of a solution?

• A. Divide the volume of solution in liters by the number of moles of solute
• B. Multiply the mass of solute by the volume of solution in liters
• C. Divide the number of moles of solute by the volume of solution in liters
• D. Multiply the number of moles of solute by the volume of solution in milliliters

Answer: (C)

Verified step by step guidance

1. Recall the definition of molarity (M), which is a measure of concentration representing the number of moles of solute dissolved per liter of solution.
2. Express molarity mathematically as \(M = \frac{\text{moles of solute}}{\text{liters of solution}}\).
3. Analyze each option by comparing it to the molarity formula: dividing moles by liters matches the definition.
4. Recognize that dividing volume by moles, multiplying mass by volume, or multiplying moles by volume in milliliters do not correspond to the molarity formula.
5. Conclude that the correct calculation for molarity is dividing the number of moles of solute by the volume of solution in liters.