"Published in Newark, California, USA"
What is the molar concentration of AgNO3 solution standardized against 712 mg primary standard NaCl (58.45 g/mole) requiring 23.8 mL of the solution for titration?
Solution:
The given word problem is about volumetric analysis in which the titration of a sample and a solution is involved. If AgNO3 solution is added to NaCl solution, then the white precipitate will be formed which is AgCl. in this titration, potassium chromate is added as the indicator. The end point must be a light red color. If all NaCl molecules are used for the titration, then silver chromate will be formed as a reddish color in the solution. The chemical reaction for the titration is
Therefore, the molar concentration of AgNO3 used to standardize NaCl solution is
