Question

Complete the stoichiometry table using the starting values provided.

reagent	molecular weight	mass (g)	mmoles	equivalents	density (g/mL	vol. (mL)
bromobenzene		0.405		2.248
magnesium				1.397	xxxxxxxxxxx	xxx
benzophenone				1	xxxxxxxxxxx	xxx
diethyl ether				22.724

theoretical product

triphenylmethanol	molecular weight	mass (g)	mmoles
xxxxxxxxxxxxxxxx

melting point of triphenylmethanol ...................... in degree celsius

Select the name of the catalyst used for this reaction, if there was no catalyst used, select none:

a) bromobnzene

b) magnesium

c) benzophenone

d) diethyl ether

e) none

Please clearly state step by step solution to show how you arrived with final answer. (your help will be so much for me if you can state step by step solution). Thanks!

Answer 1

Reagent table

Reagent                        MW           mass(g)       mmol         Eq           density (g/ml)        Vol (ml)

Bromobenzene             157            0.405           2.58         2.248           1.5                       0.27

magnesium                  24.3            0.039          1.60          1.397            -                           -

benzophenone            182.2           0.210          1.15           1.00             -                           -

diethylether                  74.12          1.900          0.026        22.274         0.713                    2.7  

Theoretical product

triphenylmethanol       MW       mass (g)      mmol

                                  260.3       0.300           1.15

Catalyst in the reaction,

None

1 mole of Mg reacts with 1 mole PhBr to form grignard reagent which reacts with 1 mole of benzophenone to forms the alcohol product.