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yan [13]
2 years ago
15

Describe two ways that can be used to identify which layer is organic and which layer is the aqueous layer in a liquid-liquid ex

traction.
Chemistry
1 answer:
mash [69]2 years ago
8 0

Two ways that can be used to identify which layer is organic and which layer is the aqueous layer in a liquid-liquid extraction are:

There are many methods that can be used to distinguish two layers from each other using contrast between the two substances in certain properties. One of the common methods that can be used to distinguish aqueous layer from an organic layer is adding water to mixture and observing which layer increases in size. The layer that increases in the size is the aqueous layer, as water is immiscible with organic layer. Thus, water can only increase aqueous layer. Another way is, for a start, the ethereal layer, even laden with organic solute, should be less dense than aqueous layer, and thus should be floating on top. Sometimes you can even tell by rubbing solvent with your fingers.

<h3>What is extraction?</h3>

Extraction is a process used in organic chemistry for isolating a certain substance or a compound from its source material. Since the source material is composed of the various molecules and compounds but only a specific compound is needed, the desired compound has to be separated from the mixture.

A liquid-liquid extraction method is a method used to extract substance using the two immiscible of different natures. Since two liquids are immiscible, they liquids form the two layers when added to the same vessel. This is typically done using the water and an organic solvent that is insoluble in water. When two are mixed, they form an aqueous layer and an organic layer.

To know more about extraction visit: brainly.com/question/12910778

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Draw the structural formula of (3e,5e)-2,5-dibromo-3,5-octadiene.
mrs_skeptik [129]

We need draw the structure of (3E,5E)-2,5-dibromo-3,5-octadiene.

The structure is shown below:

The molecule has two double bonds in 3 and 5 position and two Br-atoms attached to 2 and 5 position.

The configuration is 3E and 5E. E configuration indicates cis- isomers where similar groups are in same side with respect to double bonds.

4 0
3 years ago
What is the volume of 15.0 grams of H2S at STP
den301095 [7]
1 mole of any gas under STP has volume 22.4 L.
Molar mass M(H2S) = 2M(H) + M(S)= 2*1.0 +32.1=34.1 g/mol
15g * 1mol/34.1g= 0.440 mol
0.440 mol*1L/22.4L= 9.85 L 
<span> The volume of 15.0 grams of H2S at STP is 9.85 L.</span>

7 0
3 years ago
Read 2 more answers
Sound travels most quickly through? a gas, liquid. Solid
aleksley [76]

Answer:

solids

Explanation:

through solids because the molecules are closer together

4 0
3 years ago
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Which chemical reaction needs more energy to break bonds in the reactants
MA_775_DIABLO [31]

Answer:An endothermic reaction

Explanation: In an endothermic reaction, it takes more energy to break the bonds of the reactants than is released when the bonds in the products are formed. In an endothermic reaction, the temperature goes down.

6 0
3 years ago
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Given the following proposed mechanism, predict the rate law for the overall reaction. A2 + 2 B → 2 AB (overall reaction) Mechan
nlexa [21]

Answer:

The rate of the over all reaction is ;

R=K[A_2]^{1/2}[B]

Explanation:

Step 1 : A_2\rightleftharpoons 2 A fast

Step 2  : A + B\rightarrow AB slow

Equilibrium constant of the reaction in step 1:

K_1=\frac{[A]^2}{[A_2]}....[1]

Overall reaction:

A_2 + 2 B \rightarrow 2 AB

When there is a chemical reaction which taking place in more than 1 step than the rate of the over all reaction is determined by the slowest step occurring during that process;

Here step 2 is slow step, so the rate of the reaction will be;

R=k[A][B]..[2]

Putting value of [A] from [1] in [2]:

R=k\times \sqrt{K_1\times [A_2]}\times [B]

K=k\times (K_1)^{1/2}

K = rate constant of the reaction

The rate of the over all reaction is ;

R=K[A_2]^{1/2}[B]

5 0
3 years ago
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