Bromination of E-Stilbene
how I need to calculate the theoritical and the % yield?
It was 0.20g of e-stilbene added to 10ml RBF
at the end of reaction it was 0.328 gm of product messured.
To calculate the theoretical and percent yield for the bromination of E-stilbene, you need to know the balanced chemical equation for the reaction. Unfortunately, you haven't provided that information in your question. However, I can still explain the general approach to calculating theoretical and percent yield.
1. Theoretical Yield:
The theoretical yield is the maximum amount of product that can be formed based on the stoichiometry of the balanced chemical equation. To calculate the theoretical yield, you need to know the mole ratio between the reactant (E-stilbene) and the product (brominated product).
- Convert the mass of E-stilbene to moles using its molar mass.
- Determine the mole ratio between E-stilbene and the product based on the balanced equation.
- Multiply the moles of E-stilbene by the mole ratio to find the moles of the product.
- Convert the moles of the product to grams using its molar mass.
Without the balanced chemical equation and the molar masses, it is not possible to calculate the theoretical yield for your specific reaction.
2. Percent Yield:
The percent yield is a measure of the efficiency of a reaction and represents the ratio of the actual yield to the theoretical yield, expressed as a percentage.
To calculate the percent yield, you need to know the actual yield (the amount of product you obtained) and the theoretical yield.
- Divide the actual yield by the theoretical yield.
- Multiply the result by 100 to convert it to a percentage.
For your specific reaction, you have measured an actual yield of 0.328 grams. Once you have determined the theoretical yield, you can plug both values into the percent yield equation to calculate it.
Remember that the percent yield can never exceed 100%, as it is a comparison between the actual and maximum possible yield in the reaction.