Given the AG1000 gas-phase values 84.31 kcal/mol for n-pentane, 83.64 kcal/mol for isopentane, and 89.21 kcal/mo for neopentane, find the mole fractions present in an equilib- rium mixture of these gases at 1000 K and 0.50 bar.
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- Acetyl Salicylate, C9H8O4, reacts with Potassium hydroxide. 1.75g of acetyl salicylate were hydrolyzed with 50cm3 of 0.57mol/dm3 of potassium hydroxide and the mixture were made up of 250cm3 with distilled water in a volumetric flask. Calculate: The number of moles of acetyl salicylate in 1.75g The number of moles of potassium hydroxide of 0.575mol/dm3 solution. The molarity of excess potassium hydroxide in the 250cm3 solution. If 1.15g of salicylic acid, C7H8O3, were obtained. Determine the percentage yield of the reaction.Calculate the value of the equilibrium constant, Ke , for the reaction Q(g)+X(g) = 2 M(g)+N(g) given that M(g) Z(g) 6 R(g) = 2 N(g) + 4 Z(g) 3 X(g) + 3 Q(g) 9R(g) Kei 3.59 Kc2 0.567 Kc3 = 13.8 K. =Hw.29.
- Cc .21.› Calculate the value of the equilibrium constant, Kỵ, for the reaction Q(g) + X(g) — 2M(g) + N(g) given that Kc = M(g) — Z(g) 6R(g) 2 N(g) + 4 Z(g) 3 X(g) + 3 Q(g) = 9R(g) Kc1 = 3.48 Kc2 Kc3 = 0.587 = = 13.6At equilibrium, the following amounts are found at a certain temperature in a 3.0-liter container: 2.0 mole of Cl2, 0.80 mol of H2O (steam), 0.0030 mol of HCI, and 0.0045 mol of 02. Evaluate Keat that temperature. 2Cl2 (g) + 2H2O (g) = 4HCI (g) + O2 (g) 4.7 x 10-14 8.4 x 10-7 1.4 x 10-13 2.2 x 1013 7.1 x 1012
- Henry s law is important in environmental chemistry, where it predicts the distribution of pollutants between water and the atmosphere. The hydrocarbon methylacetylene (C3H4) emitted in wastewater streams, for example, can pass into the air, where it is degraded by processes induced by light from the sun. The Henry s law constant for methylacetylene in water at 25 °C is 601 atm, when the following form of the law is used: = k methylacetylene Calculate the partial pressure of methylacetylene vapor in equilibrium with a solution of 1.47 g of methylacetylene per 1060 L of water. How many methylacetylene molecules are present in each cubic centimeter of vapor? P methylacetylene methylacetylene methylacetylene X = atm molecules per cubic centimeterCalculate the masses of oxygen and nitrogen that are dissolved in 3.0 L of aqueous solution in equilibrium with air at 25 °C and 760 Torr. Assume that air is 21% oxygen and 78% nitrogen by volume. 0.55104 mass: Henry's law constants for gases in water at 25 °C Gas kn (bar-M-¹) He 2.7 x 10¹ N₂ 1.6 x 10' 0₂ 7.9 x 10² CO₂ 29 H₂S 10. 1.79 source: S, Rock, And Gallogly 46-General Chemistry | Publisher: University BooksFor an ethanol-chloroform mixture at 545 mmHg, determine: a) The Liquid - Vapor equilibrium diagram (1pt) b) Boiling temperature with 20% mass of ethanol (1pt) c) The composition of a mixture that has gone through two distillation stages (1pt)
- What is AG for the decomposition of CaCO3 at 298 K and a partial pressure of CO2 of 4.00x10-4 bar? CaCO3(s) → CaO(s) + CO2(g) AGrxn (298 K, Pco2 = 0.400 mbar) = ??? CO2(g) Compound AG°; (kJ mol·1) CACO3(s) СаО(s) -1129 -604 -394Hydrogen sulphide 8-h average limit is 20 ppm at 25°C and 1 atm. Calculate concentration of hydrogen sulphide in mg/m at 15°C and 754 mm Hg. Q.36. For the given data draw graph Hydrogen monochloride (HCI) Solubility Potassium Chloride (KCI) Solubility Temperature Solubility (g of HCI /100 mL of H20) (°C) Temperature Solubility (g of KCI /100 mL of H20) (°C) 85 27 10 78 10 30 20 71 20 33 30 66 30 36 40 62 40 39 60 55 60 46 80 49 80 52 100 42 100 58