Homework Help: Chemistry

Posted by Jerry on Tuesday, October 5, 2010 at 11:35pm.

Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs, write NOREACTION. Are my answers below correct? I used the textbook

1. sodium chloride and lead (II) acetate

2,potassium sulfate and strontium iodide

3, chromium (III) nitrate and sodium phosphate

1. NaCl (aq) + Pb(CH3COO)2 (aq) ----> 2 Na(CH3COO) (aq) + PbCl2 (s)

2. K2SO4 (aq) + SrI2 (aq) ----> 2 KI (aq) + SrSO4 (s)

3. Cr(NO3)3 (aq) + Na3PO4 (aq) ----> 3 NaNO3 (aq) + CrPO4 (s)

Chemistry - DrBob222, Tuesday, October 5, 2010 at 11:44pm
Those look ok to me.
Chemistry - Jerry, Tuesday, October 5, 2010 at 11:52pm
My homework says that it is not formatted, are the phases ok? signs? it says it is wrong!!
please help
Chemistry - DrBob222, Wednesday, October 6, 2010 at 12:28am
These are molecular equations. The phases look ok to me. The soluble and insoluble materials look ok. The equations are balanced. I don't see anything wrong with what you did. The only question I might have is that some acetates are weak electrolytes; however, lead acetate is quite soluble and I can't see it other than aq.

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