Phosphorus pentachloride reacts with water to form hydrochloric acid and phosphoric acid (below). A solution is created by reacting 4.5 g of PCl5 (MW=208.2 g/mole) with  excess H2O.   How many moles of NaOH are needed to titrate the resulting solution to completion.   PCl5 + 4 H2O ----->5 HCl + H3PO4

Chemistry: Principles and Practice
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Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
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Chapter4: Chemical Reactions In Solution
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Problem 4.109QE
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Phosphorus pentachloride reacts with water to form hydrochloric acid and phosphoric

acid (below). A solution is created by reacting 4.5 g of PCl5 (MW=208.2 g/mole) with 

excess H2O.

 

How many moles of NaOH are needed to titrate the resulting solution to completion.

 

PCl5 + 4 H2O ----->5 HCl + H3PO4

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