what is the molarity of 20.0 ml of a KCl solution that reacts completely with 30.0 ml of a 0.400 M Pb(NO3)2 solution?
1 Answer
The answer is
First, start with the formula equation
The complete ionic equation is
The net ionic equation, obtained after eliminating spectator ions (ions that can be found both on the reactants, and on the products' side), is
According to the solubility rules, lead (II) chloride can be considered to be insoluble in water.
Notice that we have a
We know that
The number of
This makes the potassium chloride's molarity equal to