. Methanol vapor is burned with excess air in a catalytic combustion chamber. Liquid methanol initially at 25C is vaporized at 1.1 atm and heated to 100C; the vapor is mixed with air that has been preheated to 100C, and the combined stream is fed to the reactor at 100C and 1 atm. The reactor effluent emerges at 300C and 1 atm. Analysis of the product gas yields a dry-basis composition of 4.8% CO2, 14.3% Oz, and 80.9% Nz. (a) Calculate the percentage excess air supplied and the dew point of the product gas. (b) Taking a basis of 1 g-mole of methanol burned, calculate the heat (kJ) needed to vaporize and heat the methanol feed, and the heat (kJ) that must be transferred from the reactor.
CHPATER 9 SUBSTITUTIOS AND β-ELIMINATIONS Nucleophilic Substitutions - You have a Lewis Base (electron pair donor). - Reacts at a carbon (at the Lewis acid) where there is a leaving group being pushed off o Lewis Acid is where substitution is occurring - You cannot have the Lewis base form a bond and then the leaving group breaks off because that would mean carbon has 5 bonds for a moment, which is not possible - Two ways: 1) You can have the Lewis base come in and push off the leaving group simultaneously (S 2) N a. Energy diagram for S 2N i. Know the geometry and shape of the transition state ii. One transition state (only there momentarily;
