Exam3_review2 - A1-1CHM 2046PRACTICE EXAM 3, FORM CODE AApr...

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Unformatted text preview: A1-1CHM 2046PRACTICE EXAM 3, FORM CODE AApr 071. Given the half-rxn:Fe(s) + CO32-(aq)-FeCO3(s) + 2 e-E= 0.756 V, and other electrochemical in-formation from the information sheet, the solubility product of FeCO3(s) at RT is closestto(1) 310-11(2) 810-5(3) 210-40(4) 710-13(5) 2102.2. The following species which doesnotshow resonance is(1) O3(2) NCO-(3) H2PO(OH)(4) SO42-(5) H2PO4-.3. For: CO2(s)-CO2(g) at-80.C, the following true condition is:(1) Gmust be +(2)PCO2(g)< V PCO2(s)(3) His - Sis +(4) His - Sis -(5) His + Sis -.4. Gfor the oxidation of cadmium in the following balanced reactionN2O(g) + 6 H3O+(aq) + H2O(l) + 2 Cd(s)-2 Cd(OH2)62+(aq) + 2 NH3OH+(aq) isclosest to (potentially helpful info: Cd(s) + 6 H2O(l)-Cd(OH2)62+(aq) + 2 e-E=0.403V; 2 NH3OH+(aq) + 7 H2O(l)-N2O(g) + 6 H3O+(aq) + H2O(l) + 4 e-E=0.050V):(1) 175 kJ/mol(2)-136 kJ/mol(3)-175 kJ/mol(4)-68 kJ/mol(5) 34 kJ/mol.5. For the following pairs of hydrated metal ions, the greatest difference for B/L acid strengthsshould be shown between(1) Al(OH2)63+and Be(OH2)42+(2) Mg(OH2)62+and Ba(OH2)42+(3) Li(OH2)4+and Mg(OH2)62+(4) Al(OH2)5(OH)2+and Be(OH2)3(OH)+(5) Ca(OH2)62+and Sr(OH2)62+....
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This note was uploaded on 01/26/2009 for the course CHM 2045 taught by Professor Mitchell during the Fall '07 term at University of Florida.

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Exam3_review2 - A1-1CHM 2046PRACTICE EXAM 3, FORM CODE AApr...

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