key_final__f2005

key_final__f2005 - Name TA Instructor CHEMISTRY 2A Final...

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Name _______________________ TA _________________________ Instructor ____________________ CHEMISTRY 2A Final Exam – Fall 2005 Instructions This is a CLOSED BOOK EXAM. No notes or books are permitted. DO NOT OPEN the exam until instructed to do so. Please show all relevant work where it is indicated for full credit. You have exactly 120 minutes for this exam. Any exams handed in later will receive a 5 point penalty or higher. Answer all the questions you are sure of first, then use the remaining time for the rest. Avogadro’s number is 6.022 x 10 23 , R = 8.314 J/mol K or 0.082057 L atm mol -1 K -1 , c = 3.00 x 10 8 m/s, h = 6.62607 x 10 -34 J s, R H = 2.179 x 10 -18 J x A = n A / n tot = P A / P tot , E photon = h ν = hc/ λ , λ = h/mu, E = R H (1/n i 2 – 1/n f 2 ) d = MP/RT, Rate 2 /Rate 1 = (M 1 /M 2 ) 1/2 1000 g = 1 Kg, 1 nm = 1 x 10 -9 m Solubility rules 1) Compounds containing alkali metals (Group 1), the ammonium ion (NH 4 + ), nitrates, perchlorates, and acetates are all soluble. 2) Chlorides, bromides, and iodides (halides) are soluble (except Pb 2+ , Ag + , and Hg 2 2+ ) 3) Sulfates are soluble (except Ca 2+ , Sr 2+ , Ba 2+ , Pb 2+ , and Hg 2 2+ ) 4) Hydroxides, sulfides, carbonates, chromates, and phosphates are insoluble. Except those listed above as soluble. Also, sulfides of group 2 elements are soluble. Questions Points (Pg 2) Questions 1-6 (18 points) (Pg 3) Questions 7-12 (18 points) (Pg 4) Questions 13-16 (20 points) (Pg 5) Questions 17-18 (10 points) (Pg 6) Questions 19, 20 (24 points) (Pg 7) Questions 21-23 (31 points) (Pg 8) Questions 24, 25 (17 points) (Pg 9) Questions 26 (12 points) Total out of 150 points
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2 Multiple Choice & Fill in the Blank Questions 1-12: 3 points each (No partial credit) 1) Rank in order of decreasing atomic radius: O 2- , Ne, Na + a) Ne > Na + > O 2- , b) Ne > O 2- > Na + c) O 2- > Na + > Ne d) O 2- > Ne > Na + e) None of the above 2) Rank in order of decreasing ionization energy: S, P, Li
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key_final__f2005 - Name TA Instructor CHEMISTRY 2A Final...

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