erature. The weaker the intermolecular forces in the li in- molecules can escape
ID: 526066 • Letter: E
Question
erature. The weaker the intermolecular forces in the li in- molecules can escape and, therefore the higher the ressure at a given temperature vapor Give It Some Thought Which compound do you think is more volatile at 25 oc:ccla or cBr4? Vapor pressure and Boiling Point The boiling point of a liquid is the temperature at which its vapor pressure the thermal energy of the molecules is great enough for the molecules ntheinterior of the liquid to break free from their neighbors and enter the gasphase. As a result, bubbles of vapor form within the liquid. The boil- ing point increases as the external pressure increases. The boiling point ofa liquid at l atm (760 torr) pressure is called its normal boiling point. From Figure 11.25 we see that the normal boiling point ofwater is 100 °C. time required to cook food in boiling water depends on the water temperature. In an open container, that temperature is 100 C but it is at higher temperatures. Pressure cookers work by allowing possible to 0 escape only it exceeds a predetermined pressure; the pres- when sure above the therefore increase above atmospheric pressure. er water can a higher temperature, thereby pressure causes the water to boil at Wing the get hotter and to cook more rapidly why takes l at e effect pressure on boiling point also explains it press high of at sea level. The atmospheric and f elevations than it does 100°C, longer er boils at a temperature lower than to cook.Explanation / Answer
CCl4 and CBr4 there is a difference in the dispersion forces present. It is more for CBr4 and hence it has higher BP and less volatile. Hence at 25oC CCl4 is more volatile.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.