1) a student used 3.50 g of salicylic acid. calculate theoretical yield
2) the actual yield (from experiment) was found to be 1.50 g less than the theoretic yield (mass), calculate the percent yield
3) t
It would help if we knew what you were doing.
#2. Theoretical yield = TE
actual yield = AE = TE-1.5
%yield = (AE/TE)*100 =
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To calculate the theoretical yield of a chemical reaction, you need to know the balanced chemical equation for the reaction and the molar mass of the reactant or product you are interested in. In this case, we have the molar mass of salicylic acid (C7H6O3).
1) To calculate the theoretical yield, follow these steps:
a) Start by converting the mass of salicylic acid given (3.50 g) to moles. To do this, divide the given mass by the molar mass of salicylic acid.
molar mass of salicylic acid = 138.12 g/mol
moles = mass / molar mass
moles = 3.50 g / 138.12 g/mol = 0.02534 mol (rounded to five decimal places)
b) Use the stoichiometry of the balanced chemical equation to determine the moles of the product in the reaction. This requires looking at the coefficients in the equation. For example, if the balanced equation is:
2A + 3B → 4C
Then, for every 2 moles of A reacting, 4 moles of C are produced.
c) Once you have determined the moles of product, convert it back to grams by multiplying by the molar mass of the product.
Since the specific chemical equation is not provided in the question, I am unable to provide an exact calculation for the theoretical yield. However, by following the steps outlined, you should be able to determine the theoretical yield of the reaction using the information given.
2) To calculate the percent yield, you need both the actual yield and the theoretical yield. The percent yield is calculated using the formula:
Percent yield = (actual yield / theoretical yield) * 100
In this case, the actual yield is given as being 1.50 g less than the theoretical yield. Let's assume the theoretical yield is Y g.
actual yield = theoretical yield - 1.50 g
actual yield = Y g - 1.50 g
Now you can substitute these values into the percent yield formula:
Percent yield = (actual yield / theoretical yield) * 100
Percent yield = [(Y g - 1.50 g) / Y g] * 100
3) It seems like your question got cut off. Please provide the rest of your question, and I'll be happy to help you further.