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
asambeis [7]
3 years ago
10

In which of the following cases would recrystallization be favored over extraction when purifying a mixture of two solid compoun

ds?
1. When both compounds have the same functional group(s).
II. When the desired compound is poorly soluble in the solvent pair at low temperatures and greatly soluble in the solvent pair at high temperatures.
III. When there is a significant excess of the desired compound.
A. I and III.
B. II.
C. II and III.
D. I and II.
E. All of the above.
F. None of the above.
Chemistry
1 answer:
777dan777 [17]3 years ago
8 0

Answer:

B. II.

Explanation:

The idea of recrystallization works when the solubility of the target substance decreases as the temperature of the solution decreases.

The method of recrystallization involves dissolving the solute in a suitable hot solvent and then allow the solution to cool gradually. The pure solute dissolves in the hot solvent and then separates out of the solution as it is cooled to room temperature.

Hence recrystallization is preferred over solvent extraction when the desired compound is poorly soluble in the solvent pair at low temperatures and greatly soluble in the solvent pair at high temperatures.

You might be interested in
1. Define a Family.
Nataliya [291]

Answer:

  1. a family is a group consisting of 2 parents and their children living together in a union.

or all desendants of a common ancestor

2. A period is a name given to the horizontal row of the periodic table.

3.

a.mg

b.k

c.Fe

d.cu

e.Al

4.

a.Carbon

b.Chlorine

c.Gold

d.strontium

5.

a.period 1

b.period 4

c.period 5

d.period 5

6.

a.group 6

b.group 2

c.group 7

d.group 8 belong ti 1st transitional elements.

7.

a.F

b.Na

c.Ar

d.V

e.I

4 0
2 years ago
Write molecular, complete ionic, and net ionic equations for the reactions that occur, if any, when solutions of the following s
Stells [14]
<span>Ca(NO3)2 (aq) + Na2SO4 (aq) --> CaSO4 (s) + 2NaNO3 (aq) Ca2+ (aq) + 2NO3- (aq) + 2 Na+ (aq) + SO4 (aq) --> CaSO4 (s) + 2Na+ (aq) + 2NO3- (aq) cancel out spectator ions Ca2+ (aq) + SO4 (aq) ---> CaSO4 (s hope it helps</span>
5 0
2 years ago
an atom has an atomic number of 9 a mass number of 19 and an electron configuration of 2-6-1 explain why the number of electrons
sukhopar [10]
You can tell that the atom is in the excited state because:

- Electron configuration should follow the 2-8-8-2 rule, meaning that the inner shell should be filled before the next shell can start holding electrons.

- Instead of the atom's electron configuration being in the ground state at 2-8-8-1, electrons from the second shell have jumped to the third.
5 0
3 years ago
Patrick and SpongeBob love to blow bubbles! Patrick found some Super Bubble Soap at Sail-Mart. The ads
EleoNora [17]

Answer:

BUBBLE SUPER BUBBLE

Explanation:

4 0
3 years ago
When the pressure and number of particles are kept constant for a sample of gas, which of the following is also constant for the
Leno4ka [110]
The answer is D....................
7 0
2 years ago
Other questions:
  • Which of the following reactions could be used to power a battery because of the transfer of electrons?
    8·1 answer
  • All mixtures can be separated by physical processes. true or false
    5·1 answer
  • he solutions in the arms of a U-tube are separated at the bottom of the tube by a selectively permeable membrane. The membrane i
    10·1 answer
  • Compounds usually have the same properties as the bonds they are made from true or false
    11·1 answer
  • Which is a postulate of the kinetic-molecular theory?
    12·2 answers
  • Why is light energy written on the left side of the equation
    14·1 answer
  • The goal of this experiment was to answer the
    12·1 answer
  • I need help on this!!
    6·1 answer
  • What time did frosty die in frosty meets his demise
    11·1 answer
  • Two groups were tasked to measure the mass of the metal objects given by their teacher. Rachel’s group has the following data fo
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!