Which of the following has the lowest vapor pressure? A) H₂O B) NaCl C) NH₃ D) O₂ E) CH₄

Name: Which of the following has the lowest vapor pressure? A) H 2 O B) NaCl C) NH 3 D) O 2 E) CH 4
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Question

Quizplus · Accepted Answer

NaCl is an ionic compound and therefore does not have a vapor pressure. The other options are molecular compounds and can evaporate, but CH4 has the lowest molecular weight and therefore the lowest vapor pressure of the remaining options.

Which of the Following Has the Lowest Vapor Pressure