Question

When the reaction h3po4(aq) ca(oh)2(aq)→ occurs what is the formula for the salt formed?

Answer 1

2H3PO4 + 3Ca(OH)2 ➡ Ca3(PO4)2 + 6H2O.

Hence salt formed is Ca3(PO4)2.
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Answer 2

The formula for the salt formed is Ca(HPO4)

Step-by-step explanation:

When an acid reacts with a base, there is a salt formation. Sometimes the replacement of the hidrogens in the acid by the cation of the base is complete, and sometimes there is a partial replacement,as in the presente case. Here, the cation of the base is Ca2+ and it will reacts with the anion HPO4- of the acid.

H3PO4 + Ca(OH)2 ⇒ Ca(HPO4) + 2H2O

As you can see, water is also formed as a product of the reaction.

Summarizing, the formula for the salt formed is Ca(HPO4)