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trasher [3.6K]
2 years ago
6

(a)Name a technique to seperate a mixture of two or more miscible liquids for which difference in boiling point is less than 25

k ?
(b)describe the structure of the column used in the above technique . why is it used ?
Chemistry
1 answer:
MArishka [77]2 years ago
5 0

Answer:

(a) fractional distillation

(b) the column consists of a distilling flask, a fractionating column, a thermometer, a bunsen burner, and a beaker to collect the distilled liquid. it is used to separate liquid with close boiling points also, the fractionating has glass beads and a large surface area for condensation and vaporization of liquid

Explanation:

fractional distillation is used to separate liquids with close boiling points

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15.1 L N2 at 25 °C and 125 kPa and 44.3 L O2 at 25 °C and 125 kPa were transferred to a tank with a volume of 6.25 L. What is th
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Answer:

The total pressure of the mixture in the tank of volume 6.25 litres at 51°C  is 1291.85 kPa.

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For N2,

                Pressure(P₁)=125 kPa

                  Volume(V₁)=15·1 L

                Temperature (T₁)=25°C=25+273 K=298 K

Similarly, for Oxygen,

                   Pressure(P₂)= 125 kPa

                   Volume(V₂)= 44.3 L

                  Temperature(T₂)=25°C= 298 K

Then, for the mixture,

              Volumeof the mixture( V)= 6.25 L

                                     Pressure(P)=?

                Temperature (T)= 51°C = 51+273 K=324 K

Then, By Combined gas laws,

                                 \frac{P_{1} V_{1} }{T_{1} } +\frac{P_{2} V_{2} }{T_{2} } =\frac{PV}{T}

                      or, \frac{15.1*125}{298} +\frac{44.3*125}{298} =\frac{P*6.25}{324}

                     or, 6.34+18.58=\frac{P*6.25}{324}

                     or, P=\frac{24.92*324}{6.25}

                        ∴P=1291.85 kPa

So the total pressure of the mixture in the tank of volume 6.25 litres at 51°C  is 1291.85 kPa.

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