1) RX + Mg -----> RMgX

0.5 0.8-----> 0.5

2) 2RMgX + Ester -----> Alkoxide salt

0.5 (limiting reagent) + 0.3 -----> 0.25

3) 2 Alkoxide + H2SO4 ------> 2 Alcohol

0.25 (limiting) + 1.0 -------> 0.25

please help find the theoretical yield from the data provided. above is an example of how to find the theoretical yield from 3 different reactions.

part 1

Data:

Mg used 1.075 g

PhBr + ether used 17.8 mL

part 2

Data:

Used 6M Sulfuric acid : 7 mL

Used di-ether: 32.3 mL

To wash organic layer:

Used 5 mL 3M Sulfuric acid, 10 mL sodium bicarbonate, 5.3 mL saturated sodium chloride

Used 25 mL cyclohexane

Added small pea size of sodium sulfate

final product weight 2.921 g