II K w 10 16for water at T 373 K III K w H OH for water at any T 1III only2 II

Ii k w 10 16for water at t 373 k iii k w h oh for

This preview shows page 5 - 7 out of 9 pages.

II) Kw= 1016for water at T = 373 K III) K w [H + ] = [OH ] for water at any T 1. III only 2.II only3.I, II4.I, II, III 5.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. 017 6.0points Consider two closed containers. Container X is a 2 L container that contains 0.5 L of acetone. Container Y is a 3 L container that contains 1.8 L of acetone. Both containers and contents are at 28 C. Which of the following is true? 1. The vapor pressure in container Y is greater. 2. You would need information about the shape of the containers to be able to answer this question. 3. The vapor pressures in both containers are equal. correct 4. The vapor pressure in container X is greater. Explanation: 018 6.0points Rank the following liquids in increasingorder of solubility in water (H2O): CH 3 F, (CH 3 ) 2 NH, CH 3 Cl, CBr 4 .
Image of page 5
Version 470 – Exam 1 – laude – (51155) 6 Which of the following statements is/aretrue concerning auto-protolysis of water? Consider the reaction below:2NH3(g)←→3H2(g) + N2(g)If K is 1080which of the following is agood estimate of equilibrium concentrationsof NH3, H2and N2, respectively?
Image of page 6
Image of page 7

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture