Homework Answers
High vapour pressure indicates the presence of weak intermolecular forces in a liquid. option 3 is the asnwer.
Explanation: Due to the presence of weak intermolecular forces of attraction, the molecules can easily broken and will show high vapour pressure. so option 3 is correct.
liquids with weak intermolecular forces have low boiling point, low heat of vapourization and low critical temperature, so option 1,2,4 are not answers.
liquids with weak intermolecular forces requires less energy to break the bonds so they have low boiling point.
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Question 12 0/4 p Which of the following properties indicates the presence of weak intermolecular forces...
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figure 1 Figure 2 Liquid ethanol mm P increasing P = equilibrium vapor pressure P=0 Add...
figure 1
Figure 2
Liquid ethanol mm P increasing P = equilibrium vapor pressure P=0 Add System comes to equilibrium ethanol Evacuated flask, pressure zero Molecules begin to vaporize, pressure increases Molecules leave and enter liquid at equal rates, pressure reaches steady-state value 34.6 °C 78.3°C 100 °C Normal boiling point Diethyl ether Vapor pressure (torr) Ethyl alcohol (ethanol) Water Ethylene glycol 100 20 40 60 80 Temperature (°C) Copyright 2009 Pearson Prentice Hall,Inc. Click on: (Figure 2) and study...
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figure 1
Figure 2
Liquid ethanol mm P increasing P = equilibrium vapor pressure P=0 Add System comes to equilibrium ethanol Evacuated flask, pressure zero Molecules begin to vaporize, pressure increases Molecules leave and enter liquid at equal rates, pressure reaches steady-state value 34.6 °C 78.3°C 100 °C Normal boiling point Diethyl ether Vapor pressure (torr) Ethyl alcohol (ethanol) Water Ethylene glycol 100 20 40 60 80 Temperature (°C) Copyright 2009 Pearson Prentice Hall,Inc. Click on: (Figure 2) and study...
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