WebMay 31, 2014 · The strength of Van der Waals forces depends primarily on the number of electrons in total in the molecule, so larger molecules will have higher boiling points. For isoelectonic molecules (isomers with the same number of electrons) what determines the strength of the Van der Waals forces is the area of surface contact. WebJan 30, 2024 · The pressure of gas above a liquid affects the boiling point. In an open system this is called atmospheric pressure. The greater the …
Why does branching decrease density and melting point?
WebThe lower the pressure of a gas above a liquid, the lower the temperature at which the liquid will boil. As a liquid is heated, its vapor pressure increases until the vapor pressure equals the pressure of the gas above it. Bubbles of vaporized liquid (i.e., gas) form within the bulk liquid and then rise to the surface where they burst and ... Web1. number of carbons (increase in number of carbons, and hence molecular weight, increases BP) 2. Like you said, surface area. (increase in SA results increase in BP) 3. The strength of IMF. So I believe, that because nonane has more number of carbons AND more surface area, that's TWO factors that makes it have higher BP. great gatsby potts point
Boiling point elevation and freezing point depression
WebSep 7, 2024 · Why pressure affects boiling point? Pressure affects the boiling point of a liquid because it causes the pressure to increase within the liquid. The higher the pressure, the higher the temperature at which water will start to boil. This is because when water reaches its boiling point, the vapor pressure of water is equal to atmospheric pressure. WebSurface area occupied by the liquid: Since evaporation is a surface phenomenon, the greater the surface area occupied by the liquid, the quicker it undergoes evaporation. Humidity of the surroundings: The greater the humidity of the atmosphere surrounding the water, the slower the rate of evaporation. WebOct 20, 2024 · The surface tension of a liquid decreases with temperature and approaches zero at the boiling point before vanishing completely at the critical temperature. So any … flitz rifle and knife wax