Homework help?? Chemistry?

Question

balanceing equcations..calcium choride+sodium phosphate= calcium phosphate + sodium choride??? i been trying to make it balance but cant so help me out here

Answer 1

CaCl2 + 2Na(H2PO4) = Ca(H2PO4)2 + 2NaCl

Answer 2

The first step is to write that like this:

CaCl2 + Na3PO4 --> Ca3(PO4)2 + NaCl.

Now, first, look at the Ca's. There are three of them on the right, so there should be three on the left. That makes the equation:

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

Now, look at the PO4 groups. Since there's no P or O anywhere else in the equation, you can consider them as a whole rather than element-by-element. There are two PO4 groups on the right, so there should be two on the left. Now the equation is:

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

Finally, look at the Na's and Cl's. There are six of each on the left, so there should be six of each on the right. The final, balanced equation is:

3(CaCl2) + 2(Na3PO4) --> Ca3(PO4)2 + 6(NaCl).

Answer 3

3CaCl2 + 2Na3PO4 --> Ca3(PO4)2 + 6NaCl