The following is the given information that will be used to complete the experim

ID: 897291 • Letter: T

Question

The following is the given information that will be used to complete the experiment-

-Add ?g (0.28 mmol) of curcumin

-Add ?g (x mmol, 0.7 eq) of Pd

-Add ?mL (x mmol, 75 eq) of cyclohexene

1. What is the calculation for the amount of curcumin that will be added?

2. What is the calculation for the amount of 10% Pd/C to add?

3. What is the calculation for the amount of cyclohexene to add?

4. What is the calculation for the theoretical yield of tetrahydrocurcumin?

5. How will you have an idea of whether or not the hydrogenation was successful or not?

1. Molecular weight of curcumin is 368.39 g/mol.

Number of Mole= Weight/ Molecular weight

So, weight of curcumin = molcular weight x number of moles

weight of curcumin = 368.39 g/mol x 0.00028 mol

weight of curcumin = 0.10314 g or 103.14 mg

2. To 1 eq of curcumin, 0.7 eq of Pd is required.

To 0.00028 mol of curcumin, 0.000196 mol of Pd is required.

The amount of 10% Pd/C to add is 0.010314 g or 10.314 mg (it is calculated on the amount of curcumin)

3. To 1 eq of curcumin, 75 eq of cyclohexene is required.

To 0.00028 mol of curcumin, 0.021 mol of cyclohexene is required.

weight = Molecular weight of cyclohexene x moles of cyclohexene= 82.143 g/mol x 0.021 mol

weight = 1.725 g

Density of cyclohexene is 0.8110 g/cm3 then volume will be V= 1.725 g/ 0.8110= 2.127 mL

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