One of the important reactions in the formation of smog is represented by the equation
What is the pressure of O3 remaining after a mixture of O3 with a pressure of
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- At high temperatures, a dynamic equilibrium exists between carbon monoxide, carbon dioxide, and solid carbon. C(s)+CO2(g)2CO(g);H=172.5kJ At 850C, Kc is 0.153. a What is the value of Kp? b If the original reaction system consisted of just carbon and 1.50 atm of CO2, what are the pressures of CO2 and CO when equilibrium has been established? c How will the equilibrium pressure of CO change if the temperature is decreased?arrow_forwardHydrogen fluoride decomposes according to the following equation: 2HF(g)H2(g)+F2(g) The value of Kc at room temperature is 10 1095. From the magnitude of Kc, do you think the decomposition occurs to any great extent at room temperature? If an equilibrium mixture in a 1.0-L vessel contains 1.0 mol HF, what is the amount of H2 formed? Does this result agree with what you expect from the magnitude of Kc?arrow_forwardSuppose sulfur dioxide reacts with oxygen at 25C. 2SO2(g)+O2(g)2SO3(g) The equilibrium constant Kc equals 8.0 1035 at this temperature From the magnitude of Kc, do you think this reaction occurs to any great extent when equilibrium is reached at room temperature? If an equilibrium mixture is 1.0 M SO3 and has equal concentrations of SO2 and O2, what is the concentration of SO2 in the mixture? Does this result agree with what you expect from the magnitude of Kc?arrow_forward
- Phosphorus pentachloride, PCl5, decomposes on heating to give phosphorus trichloride, PCl5, and chlorine. PCl5(g)PCl3(g)+Cl2(g) A closed 2.90-L vessel initially contains 0.0564 mol PCl5. What is the total pressure at 250C when equilibrium is achieved? The value of Kc at 250C is 4.15 102.arrow_forwardCyclohexane, C6H12, a hydrocarbon, can isomerize or change into methylcyclopentane, a compound of the same formula (C5H9CH3) but with a different molecular structure. sssss The equilibrium constant has been estimated to be 0.12 at 25 C. If you had originally placed 0.045 mol of cyclohexane in a 2.8-L flask, what would be the concentrations of cyclohexane and methylcyclopentane when equilibrium is established?arrow_forwardSulfuryl chloride is used in organic chemistry as a chlorinating agent. At moderately high temperatures it decomposes as follows: SO2Cl2(g)SO2(g)+Cl2(g) with Kc = 0.045 at 650 K. a A sample of 8.25 g of SO2Cl2 is placed in a 1.00-L reaction vessel and heated to 650 K. What are the equilibrium concentrations of all of the species? b What fraction of SO2Cl2 has decomposed? c If 5 g of chlorine is inserted into the reaction vessel, what qualitative effect would this have on the fraction of SO2Cl2 that has decomposed?arrow_forward
- The reaction of hydrogen and iodine to give hydrogen iodide has an equilibrium constant, Kc, of 56 at 435 C. (a) What is the value of Kp? (b) Suppose you mix 0.045 mol of H2 and 0.045 mol of I2 in a 10.0-L flask at 425 C. What is the total pressure of the mixture before and after equilibrium is achieved? (c) What is the partial pressure of each gas at equilibrium?arrow_forwardCalcium carbonate, CaCO3, decomposes when heated to give calcium oxide. CaO, and carbon dioxide, CO2. CaCO3(s)CaO(s)+CO2(g) Kp for this reaction at 900C is 1.040 What would be the yield of carbon dioxide (in grams) when 1.000 g of CaCO3 and 1.000 g CaO are heated to 900C in a 1.000-L vessel. (Ignore the volume occupied by the solids.) What would be the effect of adding a similar quantity of carbon dioxide to this equilibrium mixture? What would happen if the quantity of calcium carbonate were doubled?arrow_forwardAt a particular temperature, Kp = 0.25 for the reaction N2O4(g)2NO2(g) a. A flask containing only N2O4 at an initial pressure of 4.5 atm is allowed to reach equilibrium. Calculate the equilibrium partial pressures of the gases. b. A flask containing only NO2 at an initial pressure of 9.0 atm is allowed to reach equilibrium. Calculate the equilibrium partial pressures of the gases. c. From your answers to parts a and b, does it matter from which direction an equilibrium position is reached?arrow_forward
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