B. (3 pts) The equilibrium vapor pressure (Pº) of ethyl acetate (MW = 88.11 g/mol) and...
9. At 304 K the vapor pressure of pure ethyl acetate (CH,COOC2Hs) is 0.173 atm and the vapor pressure of pure methyl acetate (CH,CoOCH,) is 0.402 atm. Mixing 46.8 g of ethyl acetate M 68.11g/mo) with 45.8 g of methyl acetate (MM-74.08g/mol) gives a solution that is nearly ideal. (must show work to receive credit) (a) Calculate the mole fraction of ethyl acetate in the solution. XEl-acetate in solution (b) Calculate the total vapor pressure of the solution at 304...
6. Assume that the vapor pressure-temperature diagram below represents a mixture of (-)- menthol (MW = 156 g/mol) and water (MW = 18 g/mol). (-)-Menthol is a monoterpene that is found naturally in mint leaves (mentha arvensis) and in peppermint oil. (a) Answer the following questions based on the diagram below. Assume the standard atmospheric pressure for all questions. į. Determine the boiling point of (-)-menthol. ii. Determine the boiling point of (-)-menthol-water mixture. iii. Determine the vapor pressure of...
Question 41 5 pts What is the change in vapor pressure when 52.9 g of ethylene glycol (molar mass 62 g/mol, nonelectrolyte) is added to 800 mL of H2O at 52.0°C. The vapor pressure of pure H20 at 52.0°C is 102.1 torr. The density of H2O at 52.0°C is 0.987g/mL. O 0.124 Torr 4.50 Torr 1.95 Torr 3.00 Torr
3 pts Question 13 What is the vapor pressure of a pure sample of butanal at 50°C? The normal boiling point is 75.7°C and the heat of vaporization is 34.2 kJ/mol. O 760 torr 481 torr O 297 torr 098 torr
Calculate the vapor pressure of 3-pentanone (b.p. 102.0 °C) at the gas chromatography column temperature of 96.0"C using the form of the Clausius-Clapeyron equation shown below, P1 P. vap where R is the ideal gas constant, ???? is the enthalpy of vaporization, T1 and T2 are two different temperatures, and P1 and P2 are the vapor pressures at the respective temperatures. The enthalpy of vaporization can be estimated using Trouton's rule, ??'vap-(88 J mol-1 K-1), Tp. Number Torr Calculate the...
Problem #3: How many grams of nonvolatile compound B (molar mass= 97.80 g/mol) would need to be added to 250.0 g of water to produce a solution with a vapor pressure of 23.756 torr? The vapor pressure of water at this temperature is 42.362 torr. nella AC
Can you please give as much detail as posible, I am completely lost. Problem 3. Explaining a GLC Elution Order (6p). Below is a table of physical data for isopropanol, ethyl acetate and propyl acetate. Problem 3 Physical Constants Table Chemical Name Chemical Formula Chemical Structure Molar Mass (g/mol) Boiling Point (°C) Density (g/mL) OH Isopropanol C3H80 ver 60.1 82.5 0.786 Нас CH3 O Ethyl acetate C4H802 88.11 77.1 0.902 H3C CH3 Propyl acetate CsH1002 CH3 102.13 102 0.888 H2C...
2 dibenzalacetone acetone benzaldehyde MW- 106.13 g/mol bp-1 78°C d 1.04 g/mL MW 234.30 g/mol mp #110-1110 MW-58.08 g/mol bp 56°C d 0.79 g/mL Its bs Reaction Setup (3 pts) S. OS Initial quantity of NaOH: S. I Initial quantity of benzaldehyde: mL Initial quantity of acetone: mL Theoretical yield of dibenzalacetone based on benzaldehyde: (show calculations) Theoretical yield of dibenzalacetone based on acetone 9 (show calculations) ce tone Limiting Reagent: Product Data (10 pts) fivAL Mass: 3.3g Percent Yield:...
K2CO3 1.5 H20 Br он heat 2,3-dibromocinnamic acid trans-1-bromo-2-phenylethene Compound MW mp (C)bp (C) density (g/ml) mol) 2,3-dibromocinnamic acid 307.97 93-95 (threo) n'a n a 202-204 (erythro)E K CO.1.5H:O1 methylene chloride 138.21 84.93 56.11 891 na n a n'a 39.6 n a n a 1.33 n a 3 MKOH 2. a. What is the by-product formed in this reaction (not shown in given reaction equation)? b. What is the purpose of adding 3 M KOH at the beginning of the...
(1) H2SO4 + Al Al(SO4)3 + H2 (a) Balance the reaction (b) 17.0 g of Al will produce how many liters of H2 (pressure = 1500 torr, temp. - 175 C)? (c) To collect 28.5 L of H (P - 3510 torr , temp = 29.0C) over water, how many ml of 6.00 M H2SO4 are required ? Vapor pressure of water at 29.0 C - 32.0 torr. (2) 57.0 g of N2.3.0 mol of O2 and 18.0 g of...