Chemistry, 09.11.2020 16:40, alyssaflores

To purify caffeine (from black tea), the isolated material (crude caffeine) was subjected to sublimation. If we consider that the aqueous tea extract contained caffeine, gallic acid and chlorophyll, what impurities may we be removing at this stage of the experiment? Briefly explain.

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 16:00, Lilshawn1

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

Answers: 1

continue

Chemistry, 22.06.2019 02:30, dijonmckenzie3

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Answers: 3

continue

Chemistry, 22.06.2019 14:50, ladybugperez05

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

Answers: 1

continue

Chemistry, 22.06.2019 22:30, teagan56

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.

Answers: 1

continue

Do you know the correct answer?

To purify caffeine (from black tea), the isolated material (crude caffeine) was subjected to sublima...