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- I s it possible to carry out steam distillation at a temperature higher than 100C at 1 atm? ExplainFor 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)Explain the principle behind vacuum distillation.
- What gas law is applicable to the fractional distillation of ethanol-water mixture?Why is it extremely dangerous to attempt to carry out a distillation in a completely closed apparatus (one with no vent to the atmosphere)?The table below shows temperature/composition data collected for a mixture of methylbenzene (M) and octane (O) at 1 atm. Recall that x stands for the mole fraction in the liquid and y stands for the mole fraction in the vapor in equilibrium. The boiling points for methylbenzene (M) and octane (O) are 110.60C and 125.60C, respectively. Construct the phase diagram with Temperature vs. xM. What is the composition of the vapor in equilibrium with the liquid of composition (a) xM = 0.250 and (b) xO = 0.250. T (0C) 110.9 112.0 114.0 115.8 117.3 119.0 121.1 123.0 xM 0.908 0.795 0.615 0.527 0.408 0.300 0.203 0.097 yM 0.923 0.836 0.698 0.624 0.527 0.410 0.297 0.164
- I Review I Constant When a mixture of 10.5 g of acetylene (C,H2) and 10.5 g of oxygen (O2) is ignited, the resultant combustion reaction produces CO2 and H20. Part A Write the balanced chemical equation for this reaction. Express your answer as a balanced chemical equation. Identify all of the phases in your answer. ΑΣφ ? |2C, Н, + 50, >4CO, + 2H, О DA chemical reaction does not occur for this question. Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B Which is the limiting reactant? Express your answer as a chemical formula. O2 Submit Previous Answers v Correct3. A 12.0 cm3 sample of liquid H2O (density 1.00 g.cm-3) is heated to 328 oC under an external pressure of 0.8 atm, conditions under which it vapourises: (i) Calculate the volume of the gas. (ii) Calculate the mass of the same volume (as in part i) of CO2 gas under the same conditions. (iii) Calculate temperature of that sample of CO2 (as in part ii) at 8.0 atm pressure in a 20.0 L container.What is w when 1.83 kg of H20(1), initially at 25.0 °C, is converted into water vapour at 185 °C against a constant external pressure of 1.00 atm? Assume that the vapour behaves ideally and that the density of liquid water is 1.00 g/ml (Remember to include a+or-sign as appropriate.) Enter your answer in acceptable SI units, accurate to 3. significant figures. Use an acceptable Sl symbol for units.
- Refer to the ternary phase diagram in Fig. 5E.4. How many phases are present, and what are their compositions and relative abundances, in a mixture that contains 55.0 g of water, 8.8 g of trichloromethane, and 3.7 g of ethanoic acid? Describe what happens when (i) water, (ii) ethanoic acid is added to the mixture.3 PHASE DIAGRAMS. Sketch the temperature-composition (“T-x") phase diagram for acetone, (CH3)2 CO), and chlo- roform, CHCl3, mixtures based on the following data- ⚫ Boiling point(Bp) of pure acetone: 56.2°C • • • Bp of pure chloroform: 61.2°C Bp of the acetone-chloroform azeotrope: 64.7°C Composition of the azeotrope, by weight: 21% acetone, 79% chloroform Atomic weights (in g mol¯¹): H: 1.010, C: 12.01, O: 16.00, Cl: 35.45 Plot the mole fraction of acetone, CHCl 3 on the x-axis On your sketch of the phase diagram determine the composition of the vapour phase and the liquid phase for a system at 61.2°C having an overall acetone mole fraction of ZA = 0.80.The vapor pressure of aniline near 100°C is approximately 46 mm Hg. Estimate the amount of aniline that would steam distill if 500 g of water (steam) is collected at barometric pressure of 760 mm Hg. 2.