An acid solution has a molarity of 0.01 M. What does the value 0.01 M represent?

• A. The percentage of acid in the solution by mass
• B. The number of moles of acid dissolved per kilogram of solvent
• C. The number of moles of acid dissolved per liter of solution
• D. The number of grams of acid dissolved per liter of solution

Answer: (C)

Verified step by step guidance

1. Understand that molarity (M) is defined as the number of moles of solute dissolved in one liter of solution.
2. Recall the formula for molarity: \(M = \frac{\text{moles of solute}}{\text{liters of solution}}\).
3. Recognize that a molarity of 0.01 M means there are 0.01 moles of acid dissolved in every 1 liter of the total solution volume.
4. Note that molarity does not directly represent mass percentage, moles per kilogram of solvent (which is molality), or grams per liter without conversion.
5. Conclude that the value 0.01 M specifically represents the number of moles of acid dissolved per liter of solution.