Question

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)

Answer 1

Those look ok to me.

Answer 2

My homework says that it is not formatted, are the phases ok? signs? it says it is wrong!!
please help

Answer 3

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.

Answer 4

Your #1 isn't balanced and you don't need the () around the sodium acetate in the products.
It should be 2NaCl(aq)+Pb(C2H3O2)2(aq)→2NaC2H3O2(aq)+PbCl2(s)