What is the theoretical yield of acetylene when 2.38 g of calcium carbide reacts with excess water? What is the percentage yield if I obtained 0.77 g acetylene?
The theoretical and percentage yields of acetylene are 0.967 g and 80 %, respectively.
We start with the balanced equation.
For convenience, I have written the molar masses above the formulas.
(a) Calculate the moles of
(b) Calculate moles of
(c) Calculate the theoretical yield of
The theoretical yield of product is 0.967 g.
(d) Calculate the percentage yield of
The formula for percentage yield is
#color(blue)(bar(ul(|color(white)(a/a)"Percentage yield" = "actual yield"/"theoretical yield" × 100 %color(white)(a/a)|)))" "#
The percentage yield is 80 %.