LiquidsEvaporation46Choose the best answerEvaporation of a liquid can occur:AOnly above its boiling pointBOnly at 100°CCOnly at 0°CDAt all temperatures at which the liquid exists Like 0 Discuss 0Share
LiquidsHydrogen Bonding47Choose the best answerWhich acid does NOT exhibit significant conventional hydrogen bonding between its molecules?AHNO₃BHFCHClDH₂SO₄ Like 0 Discuss 0Share
LiquidsLondon Dispersion Forces and Boiling Point48Choose the best answerBoiling points of hydrocarbons generally increase with increasing chain length because:AHydrogen bonding increasesBLondon dispersion forces become strongerCIonic attraction increasesDMolecular polarity becomes very high Like 0 Discuss 0Share
LiquidsIntermolecular Forces and Boiling Point49Choose the best answerAmong substances A, B and C with IMF strength A < B < C, which has the lowest expected boiling point?AABBCCDAll are equal Like 0 Discuss 0Share
LiquidsEnthalpy of Vaporization50Choose the best answerThe molar enthalpy of vaporization of water at its normal boiling point is approximately:A40.7 kJ mol⁻¹B40.7 J mol⁻¹C4.07 kJ mol⁻¹D407 kJ mol⁻¹ Like 0 Discuss 0Share