A33nyafs - -1- DAWSON COLLEGE DEPARTMENT OF CHEMISTRY &...

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- 1 - DAWSON COLLEGE DEPARTMENT OF CHEMISTRY & CHEMICAL TECHNOLOGY FINAL EXAMINATION CHEMISTRY 202-NYA-05 December 15, 2003 2:00-5:00 PM 1. (a) Potassium hydrogen phosphate Copper (II) sulfate Iron (II) bromide Disulfur heptoxide (b) MgS Ca(OH) 2 Na 2 Cr 2 O 7 PCl 5 2. (a) Empirical Formula: C 6 H 10 OS 2 (b) Molecular Formula = Empirical Formula = C 6 H 10 OS 2 3. (a) 65.02 g (b) 248 L 4. (a) 2 32 8( ) 2 ( ) 4 ( ) ()3( )2 3 () H NO aq NO g H O l aq Zn s Zn aq + & + ± + ++ + (b) i) 2 () ( ) Ha q O q HO l + & + ± ii) 23 43 4 2 3 ()2 ( ) ( ) Ca Ca aq PO aq PO s + & + ± 5. (a) 2.6 x 10 5 nm (b) 242 nm 6. n i = 6 7. (a) Not in the ground state. The 2p level is not filled. (b) Not in the ground state. The 2d level does not exist. (c) Not in the ground state. According to Hund s Rule electrons enter empty degenerate orbitals before pairing up . (d) This is a ground state electron configuration.
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- 2 - 8. (a) i) 1s 2 2s 2 2p 6 3s 2 ii) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 3d 5 iii) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 5 (b) electron n l m l m s 1 5 0 0 2 5 0 0 ½ 3 5 1 1 4 5 1 0 5 5 1 +1 9. (a) No.
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A33nyafs - -1- DAWSON COLLEGE DEPARTMENT OF CHEMISTRY &...

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