A student is asked to standardize a solution of potassium hydroxide. He weighs out 0.950 g potassium hydrogen phthalate (KHC₈H₄O₄, treat this as a monoprotic acid).

It requires 31.8 mL of potassium hydroxide to reach the endpoint.

A. What is the molarity of the potassium hydroxide solution? M

This potassium hydroxide solution is then used to titrate an unknown solution of perchloric acid.

B. If 16.7 mL of the potassium hydroxide solution is required to neutralize 27.5 mL of perchloric acid, what is the molarity of theperchloric acid solution? M

Question

A student is asked to standardize a solution of potassium hydroxide. He weighs out 0.950 g potassium hydrogen phthalate (KHC₈H₄O₄, treat this as a monoprotic acid).

It requires 31.8 mL of potassium hydroxide to reach the endpoint.

A. What is the molarity of the potassium hydroxide solution? M

This potassium hydroxide solution is then used to titrate an unknown solution of perchloric acid.

B. If 16.7 mL of the potassium hydroxide solution is required to neutralize 27.5 mL of perchloric acid, what is the molarity of theperchloric acid solution? M

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