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December 21, 2014

Homework Help: Chemistry

Posted by Jeff on Friday, January 28, 2011 at 12:33pm.

Lead(II) nitrate solution reacts with potassium iodide solution to produce lead(II) iodide and potassium nitrate.

The answer in the book is:
Pb(NO3)2(aq) + 2 KI(aq) ---> 2KNO3(aq) + PbI2(s)

I understand how to write and balance the equation. However, I am confused about how to determine the states of matter. Why are some aqueous and one solid? Does it have something to do with the solubility rules? Thanks for your help.

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