tailieunhanh - Chemistry part 26, Julia Burdge,2e (2009)

Tham khảo sách 'chemistry part 26, julia burdge,2e (2009)', tài liệu phổ thông, vật lý phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 630 CHAPTER 15 Chemical Equilibrium When dissolved in water glucose corn sugar and fructose fruit sugar exist in equilibrium as follows fructose glucose A chemist prepared a M fructose solution at 25 C. At equilibrium it was found that its concentration had decreased to M. a Calculate the equilibrium constant for the reaction. b At equilibrium what percentage of fructose was converted to glucose At room temperature solid iodine is in equilibrium with its vapor through sublimation and deposition. Describe how you would use radioactive iodine in either solid or vapor form to show that there is a dynamic equilibrium between these two phases. At 1024 C the pressure of oxygen gas from the decomposition of copper II oxide CuO is atm 4CuO s 5 2Cu2O s O2 g a What is KP for the reaction b Calculate the fraction of CuO that will decompose if mole of it is placed in a flask at 1024 C. c What would the fraction be if a sample of CuO were used d What is the smallest amount of CuO in moles that would establish the equilibrium A mixture containing moles of NO and mole of CO2 was allowed to react in a flask at a certain temperature according to the equation NO g CO2 g CO g At equilibrium mole of CO2 was present. Calculate the equilibrium constant Kc of this reaction. The equilibrium constant Kc for the reaction H2 g I2 g 2HI g is at 430 C. At the start of the reaction there are mole of H2 mole of I2 and mole of HI in a reaction chamber. Calculate the concentrations of the gases at equilibrium. When heated a gaseous compound A dissociates as follows A g B g -T C g In an experiment A was heated at a certain temperature until its equilibrium pressure reached 1 where P is the total pressure. Calculate the equilibrium constant KP of this reaction. When a gas was heated under atmospheric conditions its color deepened. Heating above 150 C caused the color to .