Which of the satements below is/are limitations of Dumas Method? i. The Ideal condition is just an assumption for the vapor of the volatile sample ii. The sample must be a volatile liquid with a boiling point above 25°C and below 100°C using similar method iii. Possibility of having Impurities may not cause discrepancies of the result only i and i are the limitations only i is the limitation All are Method's limitation only i and ii are the limitations
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- (b) TABLE 3 shows data phase equilibrium diagram for carbon dioxide. TABLE 3 Pressure (atm) Temperature (°C) Triple point Critical point 5.2 -57 73 31 (i) Sketch a phase diagram for carbon dioxide (ii) Explain the phase changes that could possibly occur when a sample of carbon dioxide in a closed vessel under 1 atm pressure and a temperature of -78°C is pressurised isothermally to 10atm, followed by isobaric heating to 20°C.liquid to X N. Ask Your X N. Ask Your XA ALEKS-LX GSketching Xx www-awu.aleks.com/alekscgi/x/sl.exe/to_u-IgNsikr7;8P3jH-IvTqeviKFP6W0cqJcWJdIACROQwyw24GWHin7gZDVJOY1PIGdwmoRjhTWafiMXzDVQ21WWbzcCZqUso... lube Maps esc OSTATES OF MATTER Using heat of fusion or vaporization to find the heat needed to... Calculate the amount of heat needed to melt 125. g of solid acetic acid (HCH,CO₂) and bring it to a temperature of 78.1 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. 0 Explanation CRM Q A 2 Check Z W S # 3 X heat of so X X E H $ 4 D 5 > R C % 5 F tv T V MacBook Pro 6 G PA Thank Y & 7 B Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility A YO Aa H U The 8 N J ( 1 9 S K M 0 O TO L < I 05 JE - P 200 40 40 Lar d AFor items 4-6, consider a one component system with a temperature-pressure phase diagram as shown below. Temperature 4.) Which of the following shows has F = 2 А. А В. В С.Е D. G Е. Н 5.) Which segment shows the gas-solid equilibrium? А. АВ В. АС C. AD D. BD E. AH 6.) Which of the following shows three phases that are at equilibrium? А. А В. В С.D D. D Е. Е
- 6. Using phase diagram for the mixtures of benzene and ethylbenzene shown below, estimate: Benzene / Ethybenzene at 1.00 atm By NRTL A) Boiling point of pure ethylbenzene 140- 135- 130- B) Boiling point (Tpp) of solution with molar fraction of benzene 0.3. 125 120- 115 110- C) Composition of vapor phase (molar fractions of both liquids) above the solution with molar fraction of benzene 0.3 at Töp. 105- 100 90 85 80- 75- a1 02 03 04 05 06 0.7 0.8 09 Benzene Mole FracfioniCarbon tetrachloride melts at 250 K. The vapor pressure of the liquid is 10539 Pa at 290 K and 74518 Pa at 340 K. The vapor pressure of the solid is 270 Pa at 232 K and 1092 Pa at 250 K. (a) Calculate AHvaporization and AHsublimation. (b) Calculate AHfusion.7. Assume that the data in the table below stems from a liquid mixture that obeys Raoult's law. mole fraction p(MBenzene)/Torr p(Benzene)/Torr Total x(Methylbenzene pressure/Torr 0 0.30 0.45 0.61 0.84 1 0 7.19 (ii) 14.90 (iv) 25.02 80.00 (i) 43.57 (iii) 11.90 a) Estimate the missing values. b) Estimate the total pressure for each composition. c) Determine which component is more volatile
- Which of the satements below is/are limitations of Dumas Method? i. The Ideal condition is just an assumption for the vapor of the volatile sample ii. The sample must be a volatile liquid with a boiling point above 25°C and below 100°C using similar method iii. Possibility of having Impurities that can contribute to discrepancies of the result O All are Method's limitation O only ii and iii are the limitations O only i and ii are teh limitation O only i is the limitationDefine the relative amounts of liquid and vapor phases in a saturated mixtureare specified by the quality x.QUESTION 6 Which of the satements below is/are limitations of Dumas Method? i. The Ideal condition is just an assumption for the vapor of the volatile sample ii. The sample must be a volatile liquid with a boiling point above 25°C and below 100°C using similar method iii. Possibility of having Impurities may not cause discrepancies of the result only i and ii are the limitations O All are Method's limitation O only i is the limitation O only ii and iii are the limitations
- Show calculations for the experimental percentage of water for Trial 1Percentage of Water in Hydrate AverageQ awu.aleks.com/alekscgi/x/isl.exe/1o_u-IgNsikr7j8P3jH-IvTqeviKFP6W0cqJcWJdIACROQwyw24GWHIntrzjVfiaJ_cKvcyqWTUEIAKXtcoqhtE9... Gibbs Free E... Reading Schedule 19.6 Reduction Po... Y SOLUTION: The le... Math 115 W-S Fall.. 18.3 Gibbs Free E... 5.3 Enthalpies of... 5.3 Enthalpies of... 18.5 Gibbs Free E... 18.5 20,449 2 E W S ENTROPY AND FREE ENERGY Calculating dG from dH and dS A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 98.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free erfergy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under…1. Solid-Liquid Equilibrium 1500 Liquid 1314 1324 1300 1268 1100 1040 1030 900 700 0.2 0.4 0.6 0.8 Mole fraction of Si, x. a) A 12 kmol liquid mixture with xạ = 0.8, Xa = 0.2 at 1500 oC was cooled to 1030 oC. Determine the amount of liquid and pure solid Si that is in equilibrium with each other. b) Suppose the mixture in (a) is cooled further to 900 oC. How many kg of Casi; is formed? (Molar weights: Ca - 40 g/mol, Si - 28 g/mol) c) At xa = 0.694 and T = 1030 oC, is the system solid, liquid, or both? Temperature, e°C 0.056 0.402 Casi Casi, D69'0