030.102 Final: Final Solutions Karlin Spring 2011
Document Summary
Data/information: r = 8. 31 joules/mole-k = 1. 987 cal/mol-k. Avagadro"s number = n = 6. 022 x 10. En = k [1/n2] k = 2. 18 10. E = e 0. 059/n log10 q e = e rt/nf log10 q 1 joule = 1 coulomb x 1 volt. Joules {en is the energy for the nth energy level} 34 m/s mole 1 faraday constant f = 96,500 coulombs/mol. 1. (8) (a) which molecule or ion does not act as a ligand for a transition metal coordination complex? (circle your answer: h2o, nh4, br , oh e) co. Answer: b (b) what is the coordination number of the central metal ion in [fe(h2o)4(cn)2]cl: 2, 3, 4, 6, 7. Answer: d (c) what is the oxidation state of iron in k[fe(nh3)2(cn)4]: -1, +1, +2, +3, +6. Answer: d (d) how many geometric isomers may exist for the square-planar complex ion [pt(cn)2cl2]2-: 2, 3, 4, 5, 6.
