A student produces acetylsalicylic acid (Aspirin), C9H8O4(s), and acetic acid, HC2H3O2(aq) from the reaction of salicylic acid, C7H6O3 (s), with acetic anhydride, C4H6O3(aq). The balanced chemical equation is:
C7H6O3(s) + C4H6O3(aq) →C9H8O4(s) + HC2H3O2(aq)
a)What is the theoretical yield of Aspirin, if213.0 g of salicylic acid reacts with excess acetic anhydride?
each mole of salicylic acid produces one mole of aspirin
so, how many moles do you have in 213 grams?
1.54 right?
Yes, 1.54 mols SA is used and 1.54 mols ASA are produced. Generally theoretical yield is quoted in grams. So now convert that 1.54 mols ASA to grams ASA.
To determine the theoretical yield of Aspirin, we need to use the balanced chemical equation and calculate the molar ratio between salicylic acid and Aspirin.
The first step is to convert the mass of salicylic acid to moles. The molar mass of salicylic acid (C7H6O3) can be calculated as follows:
Molar mass of C = 12.01 g/mol
Molar mass of H = 1.01 g/mol
Molar mass of O = 16.00 g/mol
Molar mass of salicylic acid (C7H6O3) = (7 * Molar mass of C) + (6 * Molar mass of H) + (3 * Molar mass of O)
Next, divide the given mass of salicylic acid by the molar mass to obtain moles of salicylic acid.
moles of salicylic acid = given mass of salicylic acid / molar mass of salicylic acid
Now, we need to determine the molar ratio between salicylic acid and Aspirin using the balanced chemical equation:
1 mol of C7H6O3 reacts to produce 1 mol of C9H8O4
Finally, multiply the number of moles of salicylic acid by the molar ratio to find the theoretical yield of Aspirin:
theoretical yield of Aspirin (C9H8O4) = moles of salicylic acid * molar ratio
Please provide the mass of salicylic acid in grams to proceed with the calculation.