Chemistry Essay

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Homework 2 1) The following questions deals with the following reaction: ___HC2H3O2(aq) + ___Ag2CO3(aq)  ___AgC2H3O2(s) + ___H2O(l) + ___CO2(g) a. b. c. Balance the equation up above. If 20 mL of 0.35 M HC2H3O2 is reacted with a 0.20 M Ag2CO3 solution, determine the volume of 0.20 M Ag2CO3 necessary for this reaction. Write the complete ionic equation and the net ionic equation for the above reaction. 2) If we have the following reactions: Li(s) + AgNO3(aq)  LiNO3(aq) + Ag(s) Zn(s) + 2HNO3(aq)  Zn(NO3)2(aq) + H2(g) MnCl2(aq) + H2(g)  Mn(s) + 2HCl(aq) MnCl2(aq) + Zn(s)  ZnCl2(aq) + Mn(s) HNO3(aq) + Ag(s)  AgNO3(aq) + H2(g) Mn(s) + 2LiNO3(aq)  Mn(NO3)2 + 2Li(s) Spontaneous Spontaneous Nonspontaneous Nonspontaneous Nonspontaneous Nonspontaneous List the elements (Li, Ag, H2, Mn, Zn) in order, going from highest activity to lowest activity. 3) Consider the following equation: N2(g) + O2(g)  2NO(g) a) Is this reaction exothermic or endothermic? b) Calculate the amount of heat transferred when 16.4 kg of NO(g) reacts. H = 180.7 kJ 4) A 2.64 g sample of hydroquinone (C6H6O2) was combusted in a bomb calorimeter. 234 calories of energy was generated. The temperature rose from 25.0°C to 34.9°C. Calculate the heat capacity, molar heat capacity and the specific heat capacity. 5) From the enthalpies of reaction N2(g) + O2(g)  2NO(g) 2NO(g) + O2(g)  2NO2(g) 2N2O(g)  2N2(g) + O2(g) H = 180.7 kJ H = -113.1 kJ H = -163.2 kJ calculate H for the reaction of dinitrogen monoxide with nitrogen dioxide: N2O(g) + NO2(g)  3NO(g) 6) a. b. Give the electronic configuration for Sn. Give the abbreviated electronic configuration for Ti. c. Given the following orbital diagrams below, fill in the electrons (with up and/or down arrows) according to Hund’s Rule, Aufbau Principle and Pauli Exclusion Principle for Sn and Ti. (Diagrams are indicated for

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