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What is the chemical equation that describes the complete neutralization of H3PO4 by NaOH?

A. H3PO4 + 2NaOH Na2HPO4 + 2H2O
B. H3PO4 + H2O H2PO4- + H3O+
C. H3PO4 + NaOH NaH2PO4 + H2O
D. H3PO4 + 3NaOH Na3PO4 + 3H2O

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You should learn how to write arrows. Answer is D.

D. H3PO4 + 3NaOH -><- Na3PO4 + 3H2O

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