To calculate the percent yield of triphenylmethanol, you divide the actual yield by the theoretical yield and multiply by 100.
Assume that you prepared phenylmagnesium bromide by reacting 2.1 mL of bromobenzene (density 1.50 g/mL) with 0.50 g of magnesium in anhydrous ether. To this, you slowly added a solution of 2.4 g benzophenone in anhydrous ether. You obtained 2.6 g of triphenylmethanol. What was your percent yield?
The equations are (
Calculate the limiting reactant (all molar ratios are 1:1).
Since benzophenone has the fewest moles, it is the limiting reactant. It will form 0.013 mol of triphenylmethanol.
Calculate the theoretical yield.
The molar mass of
Calculate the percent yield.