Which of the following is the correctly balanced equation for the complete neutralization of H₃ PO₄ with Ca(OH)₂ ?
A)H₃PO₄+ Ca(OH)₂→ CaHPO₄+ 2H2O
B)3H₃PO₄+ Ca(OH)₂→ Ca3(PO₄)₂+ 5H2O
C)H₃PO₄+ Ca(OH)₂→ Ca3(PO₄)₂+ H2O
D)2H₃PO₄+ 3Ca(OH)₂→ Ca3(PO₄)₂+ 6H2O
E)4H₃PO₄+ 6Ca(OH)₂→ 2Ca3(PO₄)₂+ 12H2O

Question

Quizplus · Accepted Answer

The balanced equation for the reaction between H₃PO₄ and Ca(OH)₂ is:
2H₃PO₄ + 3Ca(OH)₂ → Ca₃(PO₄)₂ + 6H₂O
This is because for every 2 moles of H₃PO₄, 3 moles of Ca(OH)₂ are needed to neutralize all of the acid and form the insoluble salt Ca₃(PO₄)₂. The balanced equation shows that 2 moles of H₃PO₄ react with 3 moles of Ca(OH)₂ to form 1 mole of Ca₃(PO₄)₂ and 6 moles of water. Option D is the only balanced equation which matches this description.

Which of the Following Is the Correctly Balanced Equation for the Complete