Question

Not sure how to write this question so I will add an image

Answer 1

Explanation:

1) When phosphoric acid reacts with calcium hydroxide neutralization reaction takes place in which calcium phosphate is formed along with formation of water.

The balanced chemical equation is give as:

$2H_3PO_4+3Ca(OH)_2\rightarrow Ca_3(PO_4)_2+6H_2O$

2) When calcium oxide acid reacts with phosphorus pentoxide addition reaction takes place in which calcium phosphate is formed.

The balanced chemical equation is give as:

$3CaO+P_2O_5\rightarrow Ca_3(PO_4)_2$

Answer 2

Answer:

2H3PO4 + 3Ca(OH)2 = Ca3(PO4)2 + 6H2O

3CaO + P2O5 = Ca3(PO4)2