Problem Set 2 - Chem 208 Spring 2008 Problem Set 2 Due...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 208, Spring 2008 Problem Set 2 Due Friday, Feb. 8 at 2:00 PM Name __________________________ Lab TA Name ______________________ Lab Day/Time _____________ Supplementary Problems (Don’t hand in): Ch. 7: 57, 61, 67, 71, 80, 90, 96 1. You are given the following thermochemical data: N 2 (g) + O 2 (g) 2NO(g); Δ H 0 = 180.6 kJ N 2 (g) + 3H 2 (g) 2NH 3 (g); Δ H 0 = -91.8 kJ 2H 2 (g) + O 2 (g) 2H 2 O(g); Δ H = -483.7 kJ NOTE: The standard enthalpy of vaporization of water is 44.0 kJ/mol. a) Using the above information, calculate Δ H 0 f [H 2 O(g)] and Δ H 0 f [H 2 O(l)]. b) Under appropriate conditions, gaseous ammonia will burn in gaseous oxygen, forming only gaseous nitric oxide and liquid water. Write a balanced equation for the reaction and then calculate the standard enthalpy of combustion Δ H 0 per mole of NH 3 (g) c) The standard bond dissociation enthalpy of O 2 is 498.4 kJ/mol, and the reaction N 2 O(g) + O (g) 2NO(g) is exothermic by 150.8 kJ. Calculate the standard enthalpy of formation of N 2 O(g) using any information on this page.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon