Question #c5bdc
1 Answer
To calculate the percent yield of triphenylmethanol, you divide the actual yield by the theoretical yield and multiply by 100.
Explanation:
EXAMPLE
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?
Solution
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.