Identify which liquid will have a higher vapour pressure at 90°C if the boiling points of twoliquids A and B are 140°C and 180°C, respectively

Use the observation in the first column to answer the question in the second column.observation questionAt 50°C, Substance A has a vapor pressure of 137.torr and Substance B has a vapor pressure of 167.torr. Which has a higher boiling point?Substance ASubstance BNeither, A and B have the same boiling point.It's impossible to know without more information.The enthalpy of vaporization of Substance C is smaller than that of Substance D. At any temperature where both substances are liquid, which has the higher vapor pressure?Substance CSubstance DNeither, C and D have the same vapor pressure.It's impossible to know without more information.At 1atm pressure, Substance E boils at 98.°C and Substance F boils at 118.°C. Which has a higher vapor pressure?Substance ESubstance FNeither, E and F have the same vapor pressure.It's impossible to know without more information.

The vapour pressure of pure liquids A and B are 450 and 750 mm Hg respectively, at 350K. Find out the composition ofthe liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapour phase.

The boiling point occurs when…Group of answer choicesThe vapor pressure is equal to the external pressureThe vapor pressure is lower than atmospheric pressureThe intermolecular forces are strongThe temperature of the liquid exceeds the external temperature

Two liquids A and B have same boiling point. Liquid A is kept at sea level and B is kept at mountaintop. Which of the following is correct observation on heating

The table shows the boiling points for a range of substances.What type of vaporisation will take place with water at 80 °C?Evaporation as the temperature is below the boiling point.Boiling as the temperature is below the boiling point.Evaporation as the temperature is at the boiling point.Boiling as the temperature is at the boiling point.