You divide the actual yield by the theoretical yield and multiply by 100.
What is the percent yield if 0.650 g of copper are formed when excess aluminum reacts with a 2.00 g of copper(II) chloride dihydrate according to the equation
Step 1. Write the balanced chemical equation
3CuCl₂·2H₂O + 2Al → 3Cu + 2AlCl₃ + 2H₂O
Step 2. Calculate the theoretical yield of Cu
(a) Calculate the moles of 3CuCl₂·2H₂O
(b) Calculate the moles of Cu
(c) Calculate the theoretical yield
Step 3. Calculate the percent yield.
% yield =