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- The following reaction takes place. 4Li + O2=2Li2O. After two minutes, 4g of lithium has been used. Calculate the rate of the reaction.For each of the following reactions, indicate if there is something wrong with the reaction. If something is wrong, say what it is. a) 2H2I + Oz+2H,Om b) Ca + HzO + CO + Ha Na + Hal + NH3 CE,O70 + H2O → 2HBrOejaql FeSO) + 2N2CE →Na,SO + FeCt AlCaa + H2Ou → Al(OH); + CH4) Pb(NO3)2ag) + K,COsjag) PbCOslas) + 2KNO3lag) HBrag) + Ba(OH)a 2H;O + BaBragl CaFa + HaSOejag 2Hfg + CasOe c) d) e) f) h) i) 2PbS + O2+ 2P6O + 2S027. How did the reaction below happen? Use catalytic circle to describe the mechanism, assuming the catalyst is the complex [CpRu(CH;CN);[BAr] Catalyst CO2ME + MeO OMe ċO,Me N2 CH2CI2 (0.5 M) 60 °C, 6 h 1a 2A 3aA
- Draw the appropriate fishhook arrows for the following reaction, and label each step with one of the following (homolytic bond cleavage, addition to a pi bond, hydrogen abstraction, halogen abstraction, elimination, coupling): ·Br: Н— Вг -Br Br -Br ·Br:A reaction of the form aA Products gives a plot of 1/[A] vs time (in seconds) which is a straight line with a slope of 4.15 x 103. Assuming [A]o 0.100 M, calculate the time (in seconds) required for the reaction to reach 76.9 percent completion. %3D secondsATOM ECONOMY: Ethylene oxide, C2H4O, is an important industrial chemical [as it isthe starting place to make such important chemicals as ethylene glycol (antifreeze)and various polymers]. One way to make the compound is called the “chlorohydrinroute.”C2H4 + Cl2 + Ca(OH)2 → C2H4O + CaCl2 + H2OAnother route is the modern catalytic reaction.C2H4 + 1/2 O2 → C2H4O(a) Calculate the % atom economy for the production of C2H4O in each of thesereactions. Which is the more efficient method?(b) What is the percent yield of C2H4O if 867 g of C2H4is used to synthesize 762 gof the product by the catalytic reaction?
- y courses / S22 CHEM 161_01_04 / 27 March - 2 April/ Quiz 9 Time left 0:53:13 Calculate the mass of oxygen that will be prepared through the decomposition of 50 kg of potassium chlorate ( KCIO3 , Molar mass= 122.55 g/mol) 2 KCIO3 →2 KCI + 3 O2 Select one: O a. 612 kg O b. 12.25 kg O c. 9.8 kg O d. 19.6 kg Next pageIf the [S2O32-] is initially 2.49 x 10-4 M, and the reaction takes 170 seconds for the solution to turn blue, what is the rate of the reaction expressed in terms of I2?The reaction between peroxodisulphate (VI) ions, S2O8^2- and iodide ions, I- can be catalyzed by iron(III) ions, Fe^3+.a). Suggest a mechanism for the catalytic reaction. b). Sketch energy profile diagram for the catalyzed and uncatalyzed reactions.
- Calculate the moles of I3" reduced by S2032- using the following data: • Sample volume (mL) - 200.0 • Buret Reading, initial (mL) = 3.85 • Buret Reading, final (mL) = 18.25 • Volume of Na25203 dispensed (mL) = 14.4 mL • Average molar concentration of Naz5203 (mol/L) = 0.02004 Moles of Na25203 dispensed (mol) =. • Moles of I3 reduced by S2032 (mol) =.4. Identify t -2 a) S → S23. Which response below is not an example of how the nature of reactants affects the rate of reaction? O Graphite burns faster than diamond under equal conditions. O Coal dust burns faster than large chunks of coal. O Magnesium reacts faster in higher concentrations of HCI solution. O Calcium reacts faster in water than magnesium. White phosphorus reacts explosively on contact with air; red phosphorus does not.