Homework Help: chemistry

Posted by thad on Tuesday, January 15, 2013 at 12:38pm.

Write the balanced equation of the reaction described below. Include the states (s, l, aq, g) for the reactants and products.

When aqueous calcium chloride and sodium phosphate are mixed, solid calcium phosphate and acqueous sodium chloride are produced.

chemistry - bobpursley, Tuesday, January 15, 2013 at 1:00pm
CaCl2 (aq) + Na3PO4 (s) >> Ca3(PO4)2 (s) + NaCl (aq)

Balancing it is easy. go to the most complicated formula, and wort from there.

it is Ca3(PO4)2

so you need three Ca on left then.

3 CaCl2 + Na3PO4 >> Ca3(PO4)2 + NaCl

Now consider the phosphates in the complicated calcium phosphate: two of them.

3CaCl2 + 2Na3PO4 >> Ca3(PO4)2 + NaCl
now clean it up. first, Cl
you need two Cl in NaCl...
3CaCl2 + 2Na3PO4 >> Ca3(PO4)2 + 2NaCl
done. reinsert the states from above.
chemistry - thad, Tuesday, January 15, 2013 at 1:04pm
but that's wrong because sodium is not balanced
chemistry - bobpursley, Tuesday, January 15, 2013 at 1:13pm
Right. You need six NaCl. sometimes we introduce obvious errors to keep student from copying and pasting.
Good work.
chemistry - thad, Tuesday, January 15, 2013 at 1:33pm
but that's my problem I don't know how to get Na balanced

Answer this Question

Related Questions

Chemistry - The reaction of aqueous aluminum sulfate and aqueous calcium nitrate...
chemistry - The reaction of aqueous barium bromide and aqueous lithium carbonate...
chemistry - The reaction of aqueous calcium bromide and aqueous lithium oxalate ...
cHEMISTRY - The reaction of aqueous iron(II) sulfate and aqueous barium nitrate ...
chemistry - The reaction of aqueous iron(III) bromide and aqueous lithium ...
Chemistry - Write a balanced net ionic equation (include physical states) for ...
chemistry - The reaction of aqueous zinc chloride and aqueous sodium oxalate is ...
Chemistry - The reaction of aqueous barium hydroxide and aqueous sodium sulfate ...
chemistry - The reaction of aqueous cobalt(II) iodide and aqueous lead(II) ...
Chemistry - The reaction of aqueous sodium bromide and aqueous lead(II) nitrate ...

For Further Reading

First Name:
School Subject:
Answer: