To calculate the percent yield, 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
3CuCl₂•2H₂O + 2Al → 3Cu + 2AlCl₃ + 2H₂O
First, calculate the theoretical yield of Cu.
2.00 g CuCl₂•2H₂O ×
0.745 g Cu
Now calculate the percent yield.
% yield = (actual yield)/(theoretical yield) × 100 % =