Why is it important to prepare a standard solution in a volumetric flask?

• A. Because a volumetric flask can be heated directly to dissolve solutes faster.
• B. Because a volumetric flask allows for precise measurement of the solution's final volume, ensuring accurate concentration.
• C. Because a volumetric flask is easier to clean than other laboratory glassware.
• D. Because a volumetric flask is made of thicker glass, which prevents contamination.

Answer: (B)

Verified step by step guidance

1. Understand that a standard solution is a solution of known concentration used for precise quantitative analysis in chemistry.
2. Recognize that preparing a standard solution requires accurately measuring both the amount of solute and the final volume of the solution to ensure the concentration is exact.
3. Know that a volumetric flask is specifically designed to contain a precise volume when filled to the calibration mark, which is critical for achieving the desired concentration.
4. Note that other glassware, like beakers or Erlenmeyer flasks, do not provide the same level of volume accuracy, which can lead to errors in concentration.
5. Therefore, using a volumetric flask ensures that the final volume of the solution is measured precisely, making the concentration of the standard solution accurate and reliable.