% Error and theoretical value?

I have a chemistry problem, and the problem is... 25mL of a 3.12M Copper (II) Chloride solution reacted with aluminum nitrate. If 6.5 g of aluminum Chloride were formed, what was the % error for this reaction? The Equation for this is |actual value- theoretical value| x100 ... show more I have a chemistry problem, and the problem is... 25mL of a 3.12M Copper (II) Chloride solution reacted with aluminum nitrate. If 6.5 g of aluminum Chloride were formed, what was the % error for this reaction?

The Equation for this is |actual value- theoretical value| x100
theoretical value

I need to know how to find the theoretical value

Balanced Equation: 3 CuCl2 + 2 Al(NO3)3 = 3 Cu(NO3)2 + 2 AlCl3
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