LiquidsVapour Pressure and Temperature166Choose the best answerVapour pressure of a liquid increases with:ATemperatureBIntermolecular-force strengthCMolecular attractionDDecreasing molecular kinetic energy Like 0 Discuss 0Share
LiquidsHydrogen Bonding in Water167Choose the best answerHydrogen bonding is more extensive in water than in HF mainly because:AFluorine forms no hydrogen bondsBFluorine is less electronegative than oxygenCOxygen is always positively chargedDEach H₂O molecule can participate in more hydrogen bonds Like 0 Discuss 0Share
LiquidsEvaporation168Choose the best answerEvaporation is:AExothermicBEndothermicCNon-spontaneousDIndependent of molecular energy Like 0 Discuss 0Share
LiquidsHydrogen Bonding169Choose the best answerNH₃ has an anomalously high boiling point compared with PH₃ and AsH₃ mainly because NH₃:AForms intermolecular hydrogen bondsBIs ionicCHas the greatest molar massDHas no lone pair Like 0 Discuss 0Share
LiquidsVapour Pressure and Volatility170Choose the best answerWhich substance has the highest vapour pressure among the following when each is maintained in the liquid state at the same temperature?ALiquid NH₃BAcetoneCH₂ODHF Like 0 Discuss 0Share