# Distillation Depending on the Vapour-Liquid Equilibrium

This quiz contains multiple-choice problems on vapour-liquid equilibrium.

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Which of the following shows the correct Gibbs phase rule equation?

F = C - P + 2

P = C + P

C = F - P + 2

C = P - F

VLE data, once obtained, is represented on which scale?

Binary scale (0 < x < 1)

Pressure scale (0 < P{a} < 1)

Temperature range (T{1} < x < T{2})

Not specific

When the temperature is plotted against the equilibrium vapour, it is then called

Condensing curve

Dew Point curve

Equilibrium curve

Bubble curve

The higher the concentration of volatile species, __

The higher the rate of liquid flow

The lower the rate of separation

The higher the rate of separation

None of the above

The relative volatility of components i and j can be defined as

K{i}/K{j}

K/K{j}

y{i}/y

x{i}/x

When the boiling temperature is plotted against the liquid composition, then it is called

Cooling curve

Heating curve

Bubble point curve

Volatility phase diagram

Which system can be said as an Ideal system that obeys?

Henry’s Law

Dalton’s Law

Phase Rule

Cremer’s rule

Which of the below represents Dalton’s law?

p{i} = y{i}/P

x = y{i}/p{i}

p{i} = y{i}/x

p{i} = x{i}/y

α{AB} = 2.0 and equilibrium ratio of B is K{B} = 0.7. Estimate α{BA}.

0.9

0.65

0.5

0.6

Quiz/Test Summary
Title: Distillation Depending on the Vapour-Liquid Equilibrium
Questions: 9
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