Question

Your target mass of acetaminophen is 2.15 g. Based on your target mass, answer the questions below. Enter all quantities accurate to three significant figures. For liquid reagents, enter a volume in millilitres. For solid reagents, enter a mass in grams.

What quantity of 4-aminophenol do you need to start with?  ____________

What quantity of water do you need to use as the solvent?  ____________

What quantity of acetic anhydride do you require? ____________

What mass of purified product would be isolated to give an experimental yield of 82.00?____________

show your work

Answer 1

The reaction involve in the preparation of acetaminophen is

4-aminophenol + Acetic anhydride Acetaminophen

So the reaction is equimolar reaction and for particular quantity of substance to synthesize equimolar starting material is required. 2.15g of acetaminophen is equals to 0.014 mole. So we need 0.014 mole of 4-aminophenol = 1.526g

Water here used as common solvent so the quantity is not calculative still around 7-8ml will be perfect

Acetic anhydride required is also 0.014 mol = 1.428g

For obtaining 82% purified acetaminophen the mass would be (2.15 82)/ 100 =1.763 g