1. In re-crystallization method, if a compound was crystallized during the hot filtration step, what is the best way to overcome this problem?
2. In coupling reaction for the preparation of Methyl orange indicator, NaCl was added in re-crystallization step, give reason and discuss.
3. How poly phenols (tannins) can be removed from a solution containing Caffiene?
4. Which method is more efficient for the extraction of natural products? Reflux or Soxhlet? Why?
5. How a mixture of salicylic acid and 3-methylxanthine can be separated?
Answers: 2
Another question on Chemistry
Chemistry, 22.06.2019 13:30
Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?
Answers: 1
Chemistry, 22.06.2019 18:00
Many pharmaceutical drugs are organic compounds that were originally synthesized in the laboratory. which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology
Answers: 2
Chemistry, 22.06.2019 22:30
Which of the following molecules is polar? c3h7oh c2h5cooh
Answers: 1
You know the right answer?
1. In re-crystallization method, if a compound was crystallized during the hot filtration step, what...
Questions
Mathematics, 27.07.2019 20:20
Mathematics, 27.07.2019 20:20
Business, 27.07.2019 20:20
Mathematics, 27.07.2019 20:20
History, 27.07.2019 20:20
Social Studies, 27.07.2019 20:20
