Which of the following liquids would have the lowest vapor pressure, factoring in both the impact of the substance and the temperature? O A. CH4 at 60* O B. CH3OH at 20° OC. CH3OH at 60° OD. CH3CH₂OH at 20° O E. CH3CH₂OH at 60°
Which of the following liquids would have the lowest vapor pressure, factoring in both the impact of the substance and the temperature? O A. CH4 at 60* O B. CH3OH at 20° OC. CH3OH at 60° OD. CH3CH₂OH at 20° O E. CH3CH₂OH at 60°
Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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
Transcribed Image Text:QUESTION 1
Which of the following liquids would have the lowest vapor pressure, factoring in both the impact of the substance and the
temperature?
O A. CH4 at 60°
B. CH3OH at 20°
O C. CH3OH at 60°
O D. CH3CH₂OH at 20°
O E. CH3CH₂OH at 60°
Expert Solution
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Step 1: Vapour pressure
The liquid molecules tend to convert into the vapour phase. In a closed container, the pressure of vapour at the liquid surface at equilibrium is known as vapour pressure.
The vapor pressure depends on the following factors:
Intramolecular attraction forces: As the strength of intramolecular attraction forces increases, the vapor pressure decreases.
Temperature: As the temperature increases the kinetic energy of the liquid increases and it increases the vapor pressure of the liquid.
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