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
wel
3 years ago
9

Which of the following solvent pairs could be used in a solvent pair recrystallization (in general, not for this specific reacti

on)? For those selected, briefly explain why. For those not selected, briefly explain why not.
(a) Ethyl acetate and hexane
(b) Water and diethyl ether
(c) Methanol and methylene chloride
Chemistry
1 answer:
lilavasa [31]3 years ago
3 0

Answer:

(a) Ethyl acetate and hexane, and (c) methanol and methylene chloride.

Explanation:

re-crystallization is a technique used to purify solid compound.   Ethyl acetate and hexane are good solvent pair for recrystallization because they are miscible with each other due to their good differences in polarity. ethyl acetate has polarity of 77 while hexane has 68.

water and diethyl ether are not good solvent pair for recrystallization because water and diethyl ether are immiscible. They have very far polarity values. water has 100 while diethyl ether has 35

You might be interested in
Can someone please explain this i will give brainliest
IrinaVladis [17]
1) 2
2) 2
3) there are 2 atoms of hydrogen and 1 atom of oxygen, altogether is 3
4) subscript tells how many atoms of each element are present in the molecule
5) No, it is not balanced because the oxygen atom is not equal on both sides of the reactants and products. This wouldn’t be considered balanced as there are two oxygen atoms in the reactants section and only one oxygen on the products section.

It is:
2 H2 + O2 -> 2 H2O
4 0
2 years ago
Question 2 of 10
mart [117]
D, democritus is the answer i got
8 0
2 years ago
Read 2 more answers
Which of the following is the quantum number set for an electron in the 3rd energy level, dumb-bell shaped orbital, on the z-axi
Juli2301 [7.4K]

Answer:

Explanation:

Principal quantum no "n" = 3

Azimuthal quantum no "l"= 1

Magnetic quantum no "m"= +1/2

Over all is 3pz

5 0
2 years ago
Calcium oxide (cao) can react with carbon dioxide (co2) in a synthesis reaction. Select the most likely products of this reactio
Triss [41]

Answer: Option (b) is the correct answer.

Explanation:

A synthesis reaction is the reaction in which two compounds or atoms combine together to result in the formation of a single compound.

For example, CaO + CO_{2} \rightarrow CaCO_{3}

Thus, here CaO and CO_{2} combine together to result in the formation of calcium carbonate compound. Therefore, it is a synthesis reaction.

Therefore, we can conclude that the most likely products of Cao + co2 → CaCO3 reaction.

4 0
3 years ago
Read 2 more answers
Year/ Distance (cm)
luda_lava [24]

Answer:

the answer is C

Explanation:

6.7 to 13.2 then look at the numbers they go up but not a lot each time

5 0
3 years ago
Other questions:
  • What is the overall reaction order for this rate law: rate = k[A]2[B][C]?
    6·2 answers
  • A typical sheet of weighing paper is 3.5 inches by 4.1 inches and weighs 0.45 g. What is its absorber thickness in g/cm^{2} 2 
    10·1 answer
  • Find the atomicity of water.​
    11·1 answer
  • What number would you write before water in the formula for calcium carbonate nonahydrate? 4 5 7 9
    5·1 answer
  • Which of the following is consistent with a reaction that proceeds spontaneously in the reverse direction (assume all variables
    15·1 answer
  • in your notebook,write the appropriate tempo for the following actions.Then demostrate the actions then,demostrate the action in
    5·1 answer
  • Valence electrons will either ______________ or ______________ to form molecules.
    7·2 answers
  • What is the balanced equation for naphthalene and sulphur?​
    5·1 answer
  • If a cell is 80% water and the outside environment is 90% water. What is likely to happen?
    7·1 answer
  • Can someone please explain Hydrogen bonding to me?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!