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anygoal [31]
2 years ago
14

A pure liquid has a constant boiling point, but a liquid with a constant boiling point is not necessarily pure. Explain.

Chemistry
1 answer:
Brums [2.3K]2 years ago
7 0

A pure liquid has a constant boiling point (at constant pressure). A change in boiling during distillation is an indication of impurity. The opposite, proposition, however, is not always true, and a constant boiling point does not necessarily mean that the liquid is pure.

This is because, at the boiling point, vapor and liquid are in equilibrium, and, if the composition of the vapor and liquid remains constant through the process, the temperature will also remain constant.

The boiling point can differ by location depending on pressure. Why does not a pure liquid in a distilling flask vaporize all at once whilst the boiling temperature is reached? Additional heat must be supplied for a phase change to occur.

Learn more about a boiling point here brainly.com/question/40140

#SPJ4

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How many moles of oxygen are present in 33.6l of the gas at 1atm and 0c
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V(O₂) = 33.6 L; volume of oxygen.

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A gas has experienced a small increase in volume but has maintained the same pressure and number of moles. According to the idea
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If a gas has experienced a small increase in volume but has maintained the same pressure and number of moles, the temperature of the gas will DROP.

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According to Boyle’s law of ideal gases, volume and temperature of a gas is inversely related, as long as the pressure is kept constant;

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Therefore, if the volume of the gas increases, the temperature will definitely decrease due to the inverse relationship. The gas will get cooler.  

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