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Marianna [84]
2 years ago
11

I need answers to all of them

Chemistry
1 answer:
Dmitriy789 [7]2 years ago
6 0

Answer:

Compound 1: Carbon Dioxide (CO_2)

Compound 2: Water (H_2 O)

Compound 3: Potassium Nitrate (KNO_3)

Compound 4: I am unsure

Compound 5: Calcium Sulfate

Explanation:

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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
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4.94g of material

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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>

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

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In the second extraction:

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

8 = 100X / (56-100X)

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<em></em>

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3 years ago
An acid sample of an unknown concentration is contained in a erlenmeyer flask. Which technique below would be best suited to ana
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Answer:

Titration

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The best technique which can be used to determine the number of moles of the HCl in the sample is titration.

The given amount of HCl solution must be titrated with known concentration of the base like NaOH.

The volume of NaOH required must be noted also.

According to the reaction,

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