Potassium Hydroxide and Phosphorus Pentachloride React to Form Potassium Phosphate

question 76

Multiple Choice

Potassium hydroxide and phosphorus pentachloride react to form potassium phosphate and potassium chloride. Which of the following will result in the fastest reaction between potassium hydroxide and phosphorus pentachloride?

• A) Crystals of the two reactants are placed in a mortar and are ground.
• B) Large crystals of the two reactants are placed in contact with one another.
• C) Powdered samples of the two reactants are mixed together.
• D) Solutions of the two reactants are mixed together.

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