Question

Write the reaction scheme for the specific reaction you are performing. No mechanism is included in the scheme. Underneath the structure of reactants write how much you are using, g or mg for solids, mL and density for liquids, also how many mmol of each you are using. Get this onformation from the procedure online resources. Indicate in your scheme which reactant is limiting. Determination of limiting reagent is a general chemistry skill. Indicate in your scheme which product is the desired product and the theoretical yield in mmol and either g or mg for solids or mL for liquids. Add above or below the arrow any solvents and conditions for the reaction. All the reactants should be to the left of the reaction arrow.

The procedure: Add a magnetic stir bar to a 25 mL round-bottom flask. Add 2 mL cyclohexanol to the flask then carefully add 1 mL 9M H2SO4.

Answer 1

WE know that the density of cyclohexanol = density = 0.963 g/mL

so the mass of cylcohexanol used = Density X volume = 0.963 x 2 = 1.926 grams

Molecular weight of cyclohexanol = 100.16g /mole

Moles of cyclohexanol = Mass / molecular weight = 1.926 /100.16 = 0.0192 moles

Moles of H2SO4 used = molarity X volume in litres = 9 X 0.001 = 0.009 moles

so expected moles of cyclohexene (product) formed = 0.0192 moles

Theoretical yield = Moles X molecular weight of cyclohexene = 0.0192 x 82.143 grams = 1.577 grams

The reaction with mechanism will be