Question

1. A student is asked to standardize a solution of sodium hydroxide. He weighs out 0.939 g potassium hydrogen phthalate (KHC₈H₄O₄, treat this as a monoprotic acid).

It requires 27.5 mL of sodium hydroxide to reach the endpoint.

A. What is the molarity of the sodium hydroxide solution? ______M

This sodium hydroxide solution is then used to titrate an unknown solution of hydrobromic acid.

B. If 14.7 mL of the sodium hydroxide solution is required to neutralize 23.4 mL ofhydrobromic acid, what is the molarity of the hydrobromic acid solution? _____M

2. What volume of a 0.242 M nitric acid solution is required to neutralize 26.4 mL of a 0.194 M calcium hydroxide solution?

_______mL nitric acid

3. What volume of a 0.159 M potassium hydroxide solution is required to neutralize 16.2 mL of a 0.329 M hydroiodic acid solution?

_______mL potassium hydroxide

Answer 1