Question

which of the following can be utilized to calibrate standard solutions? titrant analyte indicator primary standard

Explanation:

To determine which is used to calibrate standard solutions, we analyze each option:

• A titrant is the solution of known concentration used in titration, but it's not for calibrating standard solutions.
• An analyte is the substance being analyzed, not used for calibration.
• An indicator is used to show the end - point of a titration, not for calibration.
• A primary standard is a highly pure and stable substance with known composition. It is used to calibrate standard solutions (like standardizing a titrant solution by reacting it with a primary standard).

Answer:

D. primary standard