what substance are mixed

Indicate which rules apply

Lead(II) nitrate, Pb(NO3)2, and hydrochloric acid, HCl, are mixed

The possible products are:

* Lead(II) chloride, PbCl2

* Nitric acid, HNO3

* Water, H2O

The following rules can be applied to predict the identity of the precipitate:

* Rule 1: A precipitate will form if the product is insoluble in water.

* Rule 2: The anion of the soluble salt will combine with the cation of the insoluble salt to form the precipitate.

* Rule 3: The cation of the soluble salt will combine with the anion of the insoluble salt to form the other product.

In this case, lead(II) chloride is insoluble in water, so it will precipitate.

* The balanced chemical equation for the reaction is:

Pb(NO3)2(aq) + 2HCl(aq) → PbCl2(s) + 2HNO3(aq)