The elementary reversible reaction

2A <-->B

is carried out in a flow reactor where pure A is fed at a concentration of 4.0 mol/dm 3 . If the equilib-rium conversion is found to be 60%,

(a) What is the equilibrium constant, KC if the reaction is a gas phase reaction?
(b) What is the KC if the reaction is a liquid-phase reaction?
(c) Write - rA solely as a function of conversion (i. e., evaluating all symbols) when the reaction isan elementary, reversible, gas-phase, isothermal reaction with no pressure drop with kA = 2 dm6 /mol•s and KC = 0.5 all in proper units.
(d) Repeat (c) for a constant-volume batch reactor.

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: