temperature
thermometer, summer, heiss @ Pixabay

There are many liquids that will react differently when heated to a given temperature. This is because each liquid has their own unique vapor pressure curve at any given boiling point. For instance, water and ethanol have similar curves until the boiling point of both substances reaches 100°C. From this point on, water’s vapor pressure drops off significantly while ethanol’s does not. This means that there will be a much greater difference in equilibrium vapor pressures between these two liquids than if they were heated to the same temperature but not boiled yet. – As seen in the graph below, water’s vapor pressure drops off significantly while ethanol’s does not. This means that there will be a much greater difference in equilibrium vapor pressures between these two liquids than if they were heated to the same temperature but not boiled yet. This is because each liquid has their own unique vapor pressure curve at any given boiling point. For instance, water and ethanol have similar curves until the boiling point of both substances reaches 100°C. From this point on, water’s vapor pressure drops off significantly while ethanol’s does not. This means that there will be a much greater difference in equilibrium vapor pressures between these two liquids than if they were heated to the same temperature but not boiled yet. –

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