Question

When performing calculations for standard additions, which of the following must be true?

A. The volume of the standard added must be added with the volume of the sample used to give a new sample volume.

B. The volume of the standard added is subtracted from the total volume of the sample used.

C. The volume of the standard added can be ignored, because it is so small.

D. The volume of the standard added can be ignored, because volumes are not used in the calculations.

E. The volume of the standard added can be ignored, because it is part of the blank correction.

Answer 1

When performing calculations for standard additions, which of the following must be true?

A:- A. The volume of the standard added must be added with the volume of the sample used to give a new sample volume.

Ex:- For example 10.0 mL of standard HCl solution is added to a 10.0 mL NaOH solutyion, a new solution is 20.0 mL of NaCl solution is formed. Hence the volume of the standard added must be added with the volume of the sample used to give a new sample volume.