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
katen-ka-za [31]
2 years ago
6

How many grams of material is lost in the aqueous phase if two extractions are carried out on 100 mL of a 5% (m/v) aqueous solut

ion using 100 mL of ethyl acetate per extraction if the partition coefficient is 8
Chemistry
1 answer:
san4es73 [151]2 years ago
6 0

Answer:

4.94g of material

Explanation:

Partition coefficient (Kp) of a substance is defined as the ratio between concentration of organic solution and aqueous solution, that is:

Kp = <em>8 = Concentration in Ethyl acetate / Concentration in water</em>

100mL of a 5% solution contains 5g of material in 100mL of water. Thus:

8 = X / 100mL / (5g-X) / 100mL

<em>Where X is the amount of material in grams that comes to the organic phase.</em>

8 = X / 100mL / (5g-X) / 100mL

8 = 100X / (500-100X)

4000 - 800X = 100X

4000 = 900X

4.44g = X

<em>Thus, in the first extraction you will lost 4.44g of material from the aqueous phase.</em>

And will remain 5g-4.44g = 0.56g.

In the second extraction:

8 = X / 100mL / (0.56g-X) / 100mL

8 = 100X / (56-100X)

448 - 800X = 100X

448 = 900X

0.50g = X

<em>In the second extraction, you will extract 0.50g of material</em>

Thus, after the two extraction you will lost:

4.44g + 0.50g = <em>4.94g of material</em>

<em></em>

You might be interested in
A prokaryotic cell does not have
krok68 [10]

Answer:

D

Explanation:

3 0
2 years ago
Two samples of potassium iodide are decomposed into their constituent elements. The first sample produced 13.0 g of potassium an
Cerrena [4.2K]

Answer:

79.4 kg

Explanation:

The formula for potassium iodide is:-

KI

This means that they are present in the same mole ration, i.e. 1 : 1

Also for 2 samples, the ratio of the masses must be equal .

So,

\frac{Mass\ of\ potassium\ in\ sample\ 1}{Mass\ of\ Iodine\ in\ sample\ 1}=\frac{Mass\ of\ potassium\ in\ sample\ 2}{Mass\ of\ Iodine\ in\ sample\ 2}

Thus,

Mass of potassium in sample 1 = 13.0 g

Mass of Iodine in sample 1 = 42.3 g

Mass of potassium in sample 2 = 24.4 kg

Applying in the above formula, we get that:-

\frac{13.0\ g}{42.3\ g}=\frac{24.4\ kg}{Mass\ of\ Iodine\ in\ sample\ 2}

Mass of iodine in sample 2 = 79.4 kg

5 0
3 years ago
which industrial city would have fewer air pollution incidents related to temperature inversions one on the great plains or one
egoroff_w [7]
I'm not positive, but I believe it would be one near the Rocky Mountains.
3 0
3 years ago
Which kind of diagram shows changes in the three kinds of rocks over time? A. rock cycle B. stratification process C. crystalliz
kogti [31]
A. Rock Cycle

Hope its right!(: 
5 0
3 years ago
Read 2 more answers
What is the potential energy of the reactants from the following energy diagram?
slavikrds [6]
The potential energy of the reactants is 200J.
From the energy diagram, the energy of the product formed is 350J; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.<span />
5 0
3 years ago
Read 2 more answers
Other questions:
  • Element z reacts with bromine to form an ionic compound zbr2. A) state with reasons i) the physical properties of zbr2 at room t
    7·1 answer
  • When calculating global population growth, the death rate is _____.
    14·2 answers
  • Which of the following is not a base?
    5·2 answers
  • Enter a balanced equation for the reaction of Na2S and CdSO4.
    6·2 answers
  • Where can volcanoes form?
    15·1 answer
  • What is the pOH of a 4.8 x 10^-10 M H+ solution?
    12·2 answers
  • In a college of exactly 2940 students, exactly 60 % are male. What is the number of female students?
    7·2 answers
  • Describe how a measuring cylinder can be used to measure the volume of gas produced
    11·1 answer
  • 9.27 mol of oxygen is equal to______molecules of oxygen <br> Please help I need it
    10·1 answer
  • Equations can be balanced by using the half-reaction method. Which step should be completed first when using this method?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!