Question

Q1. (23 pts total) A wide range of chemical substances can pollute the air. NO,, mainly includes NO and NO, is a type of major pollutant generated from road traffic and fossil fuel combustion processes. NO, (g) may react with another pollutant in the combustion engine, co(g), and regenerate NO(g). The reaction is described below: NO (g) + CO(g) → NO(g) + CO, (g) a) (5 pts) If the activation energy for this process is 132 kJ/mol, how many times faster is the process inside the combustion engine (800 °C) than in the exhaust pipe (80 °C)? Show your work. b) (8 pts) According to the thermodynamic data provided below, plot AGºx, of this reaction as a function of temperature. Label all the axis, the y-axis intercept and the "switching temperature" (if any) Find out the temperature range where the formation of NO (g) is thermodynamically favored. NO (9) + CO(g) → NO(g) + CO2 (9) Substance AS A H (J/mol K) (kJ/mol NO2(g) 239. 9 33.2 NO (g) 210. 6 9 0.3 CO (g) 197.5 -110.5 CO2 (g) 213.7 -393.5 (5 pts) Compare the extent (equilibrium constant) of the reaction between NO2(g) and CO(g) in the combustion engine (800 °C) and the extent pipe (80 °C) by calculating the ratio of their equilibrium constant. b) (5 pts) Calculate the value of the equilibrium constant for this reaction in the combustion engine.