After distilling your crude methyl benzoate, you set aside 5.12 grams of the purified ester. you then prepare the grignard reagent ( phenylmagnesium bromide ) by reacting 2.1 grams of magnesium with 14.12775 ml of bromobenzene. you add the 5.12 grams of methyl benzoate to the freshly prepared grignard reagent to form an addition product.

finally, after hydrolyzing the grignard addition product, you obtain 5 grams of the final product, triphenyl carbinol.

what is the percent yield of triphenyl carbinol ?

( the density of bromobenzene is 1.495 g/ml )

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.