Which of the following best defines concentration in a chemical solution?

• A. The amount of solute present in a given volume of solvent.
• B. The mass of the solvent in the solution.
• C. The temperature at which the solution is prepared.
• D. The total volume of the solution.

Answer: (A)

Verified step by step guidance

1. Understand that concentration in a chemical solution refers to how much solute is present in a given amount of solvent or solution.
2. Recognize that concentration is typically expressed in terms of molarity, molality, or mass percent, which all relate the amount of solute to the volume or mass of the solvent or solution.
3. Identify that the correct definition of concentration is the amount of solute present in a given volume of solvent, which aligns with the concept of molarity (moles of solute per liter of solution).
4. Eliminate the other options: 'The mass of the solvent in the solution' does not define concentration, 'The temperature at which the solution is prepared' is unrelated to concentration, and 'The total volume of the solution' does not specify the solute amount.
5. Conclude that the best definition of concentration is the amount of solute present in a given volume of solvent, as it directly relates to how concentration is measured and understood in chemistry.