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3 years ago

Fractional distillation is used to separated

Chemistry

1 answer:

UkoKoshka [18]3 years ago

5 0

Answer: Fractional distillation is used to separate liquids with differing boiling points

Explanation:

Sublimation is used to separate volatile substance from a non volatile substance where volatile substance gets converted from solid to gas.

Fractional distillation is separation of a liquid mixture into fractions which differ in boiling points by means of distillation by use of a fractionating column.

Chromatography is a separation method where different rates of adsortion of different components is used to separate substances.

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a. mol O₂=0.5

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<h3>Further explanation</h3>

Reaction

2NO(gas) + O₂(gas) ⇒ 2NO₂ (gas)

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From the equation, mol ratio NO : O₂ = 2 : 1, so mol O₂ :

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From Avogadro's hypothesis, at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles

Because mol ratio NO : O₂ = 2 : 1, so volume O₂ :

$\tt \dfrac{1}{2}\times 50~cm^3=25~cm^3$

i. total volume of reactants : 25 cm³+ 50 cm³=75 cm³

ii. the volume of nitrogen dioxide formed :

mol ratio NO : NO₂ = 2 : 2, so volume NO₂ = volume NO = 50 cm³

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