{"ad_unit_id":"App_Resource_Sidebar_Upper","resource":{"id":1249671,"author_id":638978,"title":"Chem Ch. 11","created_at":"2014-09-07T00:39:52Z","updated_at":"2016-11-08T00:30:48Z","sample":false,"description":"","alerts_enabled":true,"cached_tag_list":"","deleted_at":null,"hidden":false,"average_rating":null,"demote":false,"private":false,"copyable":true,"score":30,"artificial_base_score":0,"recalculate_score":false,"profane":false,"hide_summary":false,"tag_list":[],"admin_tag_list":[],"study_aid_type":"FlashCardDeck","show_path":"/flash_card_decks/1249671","folder_id":1141765,"public_author":{"id":638978,"profile":{"name":"newsha","about":"Left-handed gum-lover","avatar_service":"facebook","locale":"en-US","google_author_link":null,"user_type_id":null,"escaped_name":"newsha","full_name":"newsha","badge_classes":""}}},"width":300,"height":250,"rtype":"FlashCardDeck","rmode":"canonical","sizes":"[[[0, 0], [[300, 250]]]]","custom":[{"key":"env","value":"production"},{"key":"rtype","value":"FlashCardDeck"},{"key":"rmode","value":"canonical"},{"key":"sequence","value":1},{"key":"uauth","value":"f"},{"key":"uadmin","value":"f"},{"key":"ulang","value":"en"},{"key":"ucurrency","value":"usd"}]} Show {"ad_unit_id":"App_Resource_Sidebar_Lower","resource":{"id":1249671,"author_id":638978,"title":"Chem Ch. 11","created_at":"2014-09-07T00:39:52Z","updated_at":"2016-11-08T00:30:48Z","sample":false,"description":"","alerts_enabled":true,"cached_tag_list":"","deleted_at":null,"hidden":false,"average_rating":null,"demote":false,"private":false,"copyable":true,"score":30,"artificial_base_score":0,"recalculate_score":false,"profane":false,"hide_summary":false,"tag_list":[],"admin_tag_list":[],"study_aid_type":"FlashCardDeck","show_path":"/flash_card_decks/1249671","folder_id":1141765,"public_author":{"id":638978,"profile":{"name":"newsha","about":"Left-handed gum-lover","avatar_service":"facebook","locale":"en-US","google_author_link":null,"user_type_id":null,"escaped_name":"newsha","full_name":"newsha","badge_classes":""}}},"width":300,"height":250,"rtype":"FlashCardDeck","rmode":"canonical","sizes":"[[[0, 0], [[300, 250]]]]","custom":[{"key":"env","value":"production"},{"key":"rtype","value":"FlashCardDeck"},{"key":"rmode","value":"canonical"},{"key":"sequence","value":1},{"key":"uauth","value":"f"},{"key":"uadmin","value":"f"},{"key":"ulang","value":"en"},{"key":"ucurrency","value":"usd"}]} Video TranscriptI know we will discuss about vapor pressure at a given temperature. Further given molecules PF five BRF three D. A. Poor. So among these molecules which one will possess the more weber pressure and which one will possess the lower weber pressure. How to check. Usually vapor pressure increases with increasing temperature. But here the temperature is same for all the molecules. So with respect to particular masks we have to explain the vapor pressure will see the relation between vapor pressure and molecular mass. By checking the molecular mass. We can find her paper pressure. Doctor. Yes. Yes. I will see the molecular masses of the given follicle for BRF three molecular masses 1 36.9 But be a five. The masses 1 26. And for CF four the masses idiot. Now we'll see the vapor pressure depends on the molecular mass. How it depends on the molecular mass. The pressure usually depends upon the paper pressure, depends upon dispersion forces which are the inter molecular sports is present. Between the equivalent dispersion forces expression forces increases molecular size as the size of the molecule increases, the dispersion forces also increases. So as the dispersion forces are more that molecular size is more the discussion forces also. So here the molecular size is more fair. The molecular masses more for brm So we are F three as more discretion forces then we have five because of its more molecular mass. Mm hmm. How these dispersion forces are related to paper pressure. Dispersion forces are inversely related to the blood pressure. These are inversely related to paper pressure for the dispersion forces lessens the vapor pressure, or less the dispersion forces more is the vapor pressure, so we can see the decreasing order of paper pressure. But they're given molecules The four as less. More water vapor pressure, then be a fight, then BRF three has enormous, so less vapor pressure. Recommended textbook solutions Atkins Physical Chemistry10th EditionJulio de Paula, Peter Atkins 1,315 solutions Atkins Physical Chemistry10th EditionJulio de Paula, Peter Atkins 1,315 solutions Physical Chemistry10th EditionJulio de Paula, Peter Atkins 1,315 solutions General Chemistry4th EditionDonald A. McQuarrie, Ethan B Gallogly, Peter A Rock 2,515 solutions How do you know which substance has the lowest vapor pressure?When comparing vapor pressures we need to be making comparisons at the same temperature. Thus at room temperature, the substance with the lowest boiling point will have the highest vapor pressure (easiest to get into the gas phase). The substance with the highest boiling point will have the lowest vapor pressure.
What happens to vapor pressure when temperature is decreased?As the temperature of a liquid or solid increases its vapor pressure also increases. Conversely, vapor pressure decreases as the temperature decreases. The vapor pressure of a liquid can be measured in a variety of ways.
Which molecule has a lower vapor pressure?Vapor Pressure and Intermolecular Forces
Substances with strong intermolecular forces will have lower vapor pressure, because fewer molecules will have enough kinetic energy to escape at a given temperature.
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Place the following substances in order of decreasing vapor pressure at a given temperature.
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