Question
Predict which compound, $\mathrm{CH}_{4}$ or $\mathrm{CH}_{3} \mathrm{F}$, has the higher vapor pressure as a liquid at a given temperature. Explain your prediction.
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Vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system. Show more…
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In each pair of compounds, pick the one with the higher vapor pressure at a given temperature. Explain your reasoning. a. $\mathrm{CH}_{4}$ or $\mathrm{CH}_{3} \mathrm{Cl}$ b. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}$ or $\mathrm{CH}_{3} \mathrm{OH}$ c. $\mathrm{CH}_{3} \mathrm{OH}_{\text { or } \mathrm{H}_{2} \mathrm{CO}}$
Identify the intermolecular attractions in $\mathrm{CH}_{3} \mathrm{OH}$ and $\mathrm{CH}_{3} \mathrm{F}$. Which of the two substances do you expect will have the higher boiling point and which will have the higher equilibrium vapor pressure? Justify your choices.
Based only on intermolecular attraction, predict which of the following liquids has the highest vapor pressure. CH3-CO-OH CH3-CH2-CH2-Cl CH3-CH2-CH2-CH2-CH3 CH3-CH2-S-CH3
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