Question

Bromination of Acetanilide In a 25-mL Erlenmeyer flask, dissolve 0.68 g of acetanilide in approximately 4 mL glacial acetic acid. Record the exact amount of the limiting reactant that you used. Add a stir bar followed by 1.6 g pyridinium tribromide. Heat the mixture to ~60°C in a warm water bath for 10 minutes. After the 10 minutes, add 15 mL water and approximately 2 mL saturated sodium bisulfite solution to remove excess bromine, which shows by the disappearance of the orange color. If the orange color remains, add an additional 2 mL of the sodium bisulfite solution. Cool the reaction mixture in an ice bath for 5 minutes and then collect the crystals by vacuum filtration using the Hirsch funnel. Wash the crystals with a small amount of water (~5 mL), and leave in the Hirsh funnel under vacuum to dry (~5 min). Add your waste to the appropriate container!

Please show me how to find theoretical. yield. The balancing of the equation and overall structure of unit cancelation in order to then calculate percent yield. What we got from the experiment was the para isomer. Here is relevant data:  

Exact amount of acetanilide: 0.680 g dissolved in 4 mL acetic acid  

Exact amount pyridinium tribromide: 1.630 g  

Final mass: 1.003 g  

This would really help, thank you!

Answer 1

40 GveD: Brumination atetonilde using Pyidlinium- bomide Selution: NHMle NH-&C CHCOOH + mw=135 7lmf B& ww.319.827 mot Mw- 24.06 g1mot ebfained 1.0039 mass= 0-681 mass=63 IMole 3 acetanttide quins tle Pyiniumboonfiele to pndluee Pura-boomo-acrtanitide 135-1 7/met acetanilide ques 319-82 g met pyidinium bromicl(Pg .. autanilide quirts 0-68x 311.82 0-689 9 = 1-619 135-17 hurt avalable fpgordnrum bnmide acutanidide sthe imting ocactant. Thnfos theotital 4it td can be caleutate using tais macs. 135.17 7mot autanifide pmduce a14-06 7mct P-br-aceuilid 0-68x214 06 [0F87 133.17 Thuureti cat gield Phamo-acctanilide = Ob lainid yield 0781 PCstent gield Theoseti al yield F 003 X1OD = 93 % 1 078 33 7 Pas cunt yield bnmo acrtantlide