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darwood darwood
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11 years ago
Identify the correct balanced chemical equation for the reaction of calcium hydroxide with phosphoric acid to produce calcium phosphate and water
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#1
11 years ago
3Ca(OH)2 + 2H3PO4 >> Ca3(PO4)2 + 6 H2O
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#2
11 years ago
3Ca(OH)2 + 2H3PO4  -----> Ca3(PO4)2 +  6 H2O
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#3
11 years ago
Ca(OH)2 + H3PO4 ---> Ca3(PO4)2 +  H2O

1)  There are 3 Ca on the right, so place a 3 in front of the Ca(OH)2.

2)  There are 2 PO4's on the right, so place a 2 in front of the H3PO4.

3)  Adding up the remaining oxygen and hydrogen atoms on the left, we have 14 O's and 12 H's.  Therefore, put a 6 in front of the H2O.  

The balanced equation is:

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