1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mademuasel [1]
2 years ago
8

Caffeine is one of many naturally occurring chemicals in tea plants that plays two important roles: protecting the plant from pr

edators while making its flowers appealing to pollinators such as bees. It is known to be soluble in both pure water and pure dichloromethane, but exhibits a preference towards one solvent over the other. Describe the procedural steps to perform a liquid-liquid extraction and isolation of solid caffeine from a sample of one commercial tea bag.
Chemistry
1 answer:
AnnyKZ [126]2 years ago
6 0

Caffeine is more soluble in dichloromethane and the both are separated by evaporating the solvent.

Caffeine is an organic plant material which is more soluble in non-polar solvents than in polar solvents. As such, caffeine is more soluble in dichloromethane than in pure water.

In order to carry out a liquid-liquid exaction of dichloromethane from a commercial teabag, the dichloromethane is mixed with water. The caffeine is found to be more soluble in the organic dichloromethane layer than in water.

The two solvents can now be separated using a separating funnel and the solution is evaporated to obtain the caffeine.

Learn more: brainly.com/question/967776

You might be interested in
Column A
baherus [9]

Answer:

The Following are the matching to this question:

1 \to c\\2 \to  b\\3 \to   a\\4   \to  e \\5 \to  d    \\6 \to  f

Explanation:

  1. It includes creating assumptions, extracting predictions through logical outcomes, and experimentation observation based on those projections.  
  2. Every information gathered only with sense is also an observation. It expresses concern relating to scientific research. It also helps research scientists gather data.  
  3. Its independent variable inside an analysis is a controlled variable. It's also called "manipulated," because it can change its parameter, which is controlled one.  
  4. The suggested explanation for an occurrence is a hypothesis. It belongs to the scientific method. That's an experimental forecast, which is checked.  
  5. The experiment manipulates the important variables, calculates the dependent variable, controls any alien variables.
  6. It "reacts" to improvements inside an experiment that they make. It is the result or consequence of an experiment.
3 0
2 years ago
What is the predominant intermolecular force in the liquid state of each of these compounds: water (h2o), carbon tetrafluoride (
alexandr402 [8]
Water: hydrogen bonding
carbon tetrafluoride: dispersion or Van del Waals
dichloromethane: dipole-dipole
6 0
3 years ago
Read 2 more answers
Draw the major monobromination product formed by heating the following alkane with bromine.
yawa3891 [41]
A monobromination reaction of an alkane involves an alkane and bromine. The position of the hydrogen atom that will be substituted by the bromine free radical will depend on the order of the alkane. The bromine will attach to the carbon that has the most substituents.
8 0
3 years ago
Why are the outer-most electrons the only ones included in the electron dot<br> diagram?
kupik [55]

Answer:

Atoms with 5 or more valence electrons gain electrons forming a negative ion, or anion. why are outermost electrons only ones included in orbital filling diagram? they are the only ones involved in chemical reactions and bonding. ... 2s orbital is farther from the nucleus meaning it has more energy.

Explanation:

8 0
3 years ago
how much hydrogen gas is necessary to exert a pressure of 1.4 ATM at 430k if occupying a volume of 15.1 l
lora16 [44]

Answer:

5

Explanation:

7 0
2 years ago
Other questions:
  • Which of the following is a result of a change in pressure?
    14·1 answer
  • Select all of the following statements which are true of water.
    9·1 answer
  • Calculate the molar mass of Cr4(P2O7)
    5·1 answer
  • Show how you could prepare each of the following amines from benzaldehyde by reductive amination:
    14·1 answer
  • A bubble of air is rising up through the ocean. When it is at a depth of 20.0 m below the surface, where the temperature is 5.00
    7·2 answers
  • Help please i am being timed
    14·2 answers
  • If we add 20g of salt to 150g of water, what is the concentration by mass of the solution?
    15·1 answer
  • Select all that apply.
    11·2 answers
  • What charge would you expect for an formed by Ca?
    8·1 answer
  • What is the volume of Copper and Zinc used to make the grass​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!