II) Kw= 10−16for water at T = 373 KIII)Kw[H+]= [OH−] for water at any T1.III only2.II only3.I, II4.I, II, III5.II, III6.I only7.I, IIIcorrectExplanation:All equilibrium processes are temperaturedependent, and because auto-protolysis is en-dothermic,Kwincreases as temperature in-crease.Thus statement I is true, but state-ment II is the opposite of the actual case.Statement III is the definition ofKw.0176.0pointsConsider two closed containers.ContainerX is a 2 L container that contains 0.5 L ofacetone. Container Y is a 3 L container thatcontains 1.8 L of acetone. Both containers andcontents are at 28◦C. Which of the followingis true?1.The vapor pressure in container Y isgreater.2.You would need information about theshape of the containers to be able to answerthis question.3.The vapor pressures in both containersare equal.correct4.The vapor pressure in container X isgreater.Explanation:0186.0pointsRank the following liquids in increasingorder of solubility in water (H2O):CH3F,(CH3)2NH, CH3Cl, CBr4.
Version 470 – Exam 1 – laude – (51155)6Which of the following statements is/aretrue concerning auto-protolysis of water?Consider the reaction below:2NH3(g)←→3H2(g) + N2(g)If K is 10−80which of the following is agood estimate of equilibrium concentrationsof NH3, H2and N2, respectively?