Chemistry Final Exam w/ Answer Key

Jul 11th, 2016
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Chemistry Final Exam w/ Answer Key

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Surname (last name): ___________________________________Given name (First name): _________________________________Student Number: __________________________________Chemistry 1311 EFinal ExamDecember 2011Prof: Wendy PellThere are 14 pages in this exam. A periodic table and formula sheet are provided at theend. You may tear these pages off of the exam and use them to cover your work duringthe exam.Any scratch work should be on the back of the exam pages and should be handed in withyour exam.Please show all work neatly to receive credit.You have 3 hours to complete the exam.PagePoints Possible23456789101112Total898471111999590Points Earned1. a)Write the noble gas core electron configuration of the following atomsor ions. How many unpaired electrons are there in each case ?I) (2 points) 50Sn4+Kr 4d10 no unpairedII) (2 points) 21ScAr 4s2 3d1 1 unpairedb) (2 points) One of the outer most electron of an atom of a particularelement can described by the following quantum numbers:n = 4, l = 2, ml = 0, ms= +1/2I) what kind of electron is this:(e.g. 1s, 3d etc.)4dII) identify the element given that it has two other electrons that areenergy degenerate to the electron described above.Nb2. What is the equilibrium constant for each of the following reactions:(identify it as Kc, Kp, Ka, Kb, Ksp or Keq as appropriate) (I dont want a numericalvalue, just an expression):a) (1 points) PCl5(g) PCl3(l) + Cl2(g)Kp with a

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