CHE 303

 

Lab Report

 

Title: Preparation of Triphenylmethanol via Grignard Reagent

 

Date:

 

Name:

 

Equation:

 

(a) using structural formulas, write out each equation of the reactions used to convert Mgo, C6H5Br,

C6H5COOCH3 to (C6H5)3COH, H2O, Mg++, Br-

 

 

 

 

 

     (b) Write out the NET Reaction

 

 

 

Table of Physical Constants

 

Complete the table by writing the amounts of reactants used and the amounts of product theoretically possible

 

           Mgo

        C6H5Br

C6H5COOCH3

    (C6H5)3COH

                   MW

           24.0

           157.0

            136

            260.0

                 moles

 

 

              

 

                 grams

           2.40

 

              

 

               density

               -

           1.522

          1.094

                -

                    mL

               -

             12.4

              

                -

                    MP

               -

           -31oC

              -

            164oC

                    BP

               -

          156oC

              -

                -

 

Fill in the rest of the boxes IN PENCIL BEFORE you begin the experiment.  Show the results to your instructor.

 

 

What is the actual yield, and percent (w/w%) yield for your product

 

 

 

 

 

 

Melting Range for your product:            to             oC