This graph shows how the vapor pressure of three liquids varies with temperature: vapor pressure, torr…
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Question “This graph shows how the vapor pressure of three liquids varies with temperature: vapor pressure, torr…”
Answer
Hi,
Hope you are doing well.
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RESULTS:
- Most volatile: Methanol.
- Least volatile: isopropyl acetate.
-
Boiling point of Methanol:
65oC - Boiling point of Benzene: 80oC
-
Boiling point of isopropyl acetate:
88oC - Amount of liquid will be the same.
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EXPLANATIONS:
PART 1:
We all know that Volatility refers to the tendency of liquids to vaporize.
Liquids with higher vapor pressure at given temperatures will exhibit higher volatility.
The graph shows that methanol‘s slope is higher than the graph shown. At a given temperature, methanol will have higher vapor pressure or isopropyl acetate will have least vapor pressure have a higher slope.
Most volatile: Methanol.
Least volatile: isopropyl acetate.
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PART 2:
Boiling occurs when vapor pressure of the liquid becomes
equal to atmospheric pressure.
We know that atmospheric pressure is $strongTag19
The boiling point of molecules will be determined by the temperature that corresponds to 760 torr.
From graph:
Boiling point of Methanol: 65oC
Boiling point of Benzene: 80oC
Boiling point of isopropyl acetate:
88oC
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PART 3:
The graph shows that for methanol at 57oC,, the vapor pressure is almost 500 torr.
But the pressure inside the tank is 550 torr, hence the
methanol will not boil because the pressure is greater than vapor
pressure.
Hence, after 10 minutes, the amount of liquid will be
the same.
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