We did a lab in which we first made a grignard reagent and then convered it into benzoic acid.

The formula for the first reaction was Bromobenzene+MG ---> Grignards Reagent

Then we convered that by reacting with CO2 (dry ice) and hydrolysis with H30. creating Benzoic Acid.

How would I do a percent yield for this reaction?

We started with

.86 g bromobenzene (MW 157)

.15 g Magnesium (MW 24.3)

and formed Grignards Reagent (MW 181.3)

Then... reacted that product with

4g CO2 (MW 44.0)

and then Hydrolized it to create benzoic acid (MW 122.13)

Can someone show me the formula for a calculation like this! Thanks!