All questions that need answers are bolded. Find percent yield of caffeine: 1) T
ID: 790591 • Letter: A
Question
All questions that need answers are bolded.
Find percent yield of caffeine:
1) Tea Leaves=15.1808 grams
2.) Crude Caffeine=0.146
A sublimation experiment was done by combing 4 different students crude caffeine.
3.)Total Group Crude Caffeine=0.617 grams
Weight of pure caffeine after sublimation=0.057 grams
4.) Find the weight of the pure caffeine.
5.) Find %Yield of Crude Caffeine
6.) Find % Yield of Pure Caffeine
Find percent yield of Trimyristin:
1.) Nutmeg=5.054 grams
2.) Crude Trimyristin=1.402 grams
3.) Pure Trimyristin=0.407 grams
4.)Find the percent yield of crude trimyristin.
5.)Find the % yield of pure trimyristin.
Explanation / Answer
Caffeine
4) Weight of pure caffeine =0.057*0.146/0.617 = 0.01349 g
5) % yield of crude caffeine = 0.146/15.1808 *100% = 0.962%
6) % yield of pure caffeine = 0.057/15.1808 *100% = 0.375%
Trimystin :
4) % yield of crude trymistin = 1.402/5.054 *100% =27.74%
5)% yield of pure trymistin = 0.407/5.054 *100% = 8.05%