Question

Calculate % yield of triphenylmethanol (crude and pure)

Remember it is a two step calculations, so you should obtain the following to aid in the calculations: the mass of first reagent, mass of second reagent (including HCl – Vol & Density), and moles of both reagents (for each procedure). Then set up a Balanced Stoichiometric Equation, determine the molar ratio, determine limiting reagent and compute the theoretical yield.

These are the values:
Bromobenzene + Magnesium --> Phenylmagnesium Bromide

Phenylmagnesium Bromide + Benzophenone ---> Triphenylmethanol + Magnesium Bromide Hydroxide

0.1538g of Mg 0.9mL Bromo/Ether solution 1.0910 benzophenone + 2mL ether —-> 0.349g

   6mL of 6M HCl 2mL diethyl ether 0.301g triphenylmethanol (recrystalized and weighed 0.201 g triphenylmethanol)

Answer 1

You did mention which one is benzophenone weight . I took 0.349 gm as benzophenone weight