Question

Calculate the percent yield of the aldol condensation-dehydration reaction.

I did the following
Put 0.8 mL aldehyde, 0.2 mL ketone, 4 mL ethanol, 3 mL of 2M sodium hydroxide in a flask. Then swirled it for 15 min. Then I added 6 mL ethanol and 4 mL of 4% acetic acid. I put the solution on ice and crystals formed. I ended up with 0.305 g of product. Please show me how to calcualte my percent yield for my product.
ketone= acetone (0.791 g/ mL)
aldehyde= 4-Methylbenzaldehyde (1.019 g/ m

Answer 1

To calculate percent yield, you need the actual yield and the theoretical yield to apply in the percent yield formula. The actual yield is given, but the theoretical yield calculation requires the balanced reaction and molar amounts of reactants, which are not provided in the question.

Step-by-step explanation:

To calculate the percent yield of your aldol condensation-dehydration reaction, you need to compare the actual yield (the mass of product you obtained) to the theoretical yield (the maximum amount of product that could be formed from the reactants). The percent yield is calculated using the following formula:

Percent Yield = (Actual Yield / Theoretical Yield) x 100%

In your experiment, you mentioned obtaining 0.305 g of product. However, to complete this calculation, we need to know the theoretical yield. The theoretical yield can be calculated based on the stoichiometry of the balanced chemical equation and the molar amounts of the reactants used. Once you determine the theoretical yield, you can insert the actual yield and theoretical yield values into the formula to get your percent yield.

Without the stoichiometry and molar masses, we cannot provide a numerical percent yield result. If you can obtain the balanced equation and the amount of limiting reactant used, feel free to return for further assistance in calculating the theoretical yield and percent yield.