11.27 Ethylene glycol (HOCH2CH2OH), the major substance in antifreeze, has a normal boiling point of 198°C. By comparison, ethyl alcohol (CH3CH2OH) boils at 78 °C at atmospheric pressure. Ethylene glycol dimethyl ether (CH3OCH2CH2OCH3) has a normal boiling point of 83 °C,

Q: Isopropyl alcohol is used in rubbing alcohol mixtures. alcohol on the skin caused by evaporation.…

A: Given : Mass of alcohol = 7.71 g And heat of vaporisation of alcohol = 42.1 KJ/mol. The molecular…

Q: Acetone 1H3CCOCH32 has a boiling point of 56 °C. Based onthe data given in Figure 11.25, would you…

A: The partial pressure of a gas in the state of dynamic equilibrium with its solid (or) liquid at a…

Q: 6. A vapor volume of 1.17 L forms when a sample of liquid acetonitrile, CH3CN absorbs 1.00 kJ of…

A: Volume (V) = 1.17 L Boiling point= 81.6°C = 81.6 + 273 = 354.6 K Pressure (P) = 1.0 atm

Q: Ethylene glycol (HOCH2CH2OH), the major substance inantifreeze, has a normal boiling point of 198…

A: a) Since when H is present in the molecule attached with O, the molecules are forming H bonds with…

Q: Which of the followig substances would have the lowest vapor pressure at 298 K? The boiling points…

A: Ans is d

Q: 2. Pentane C5H12 boils at 36°C at 1 atmosphere pressure. What is the molar heat of vaporization…

A: given, P1 = 1 atm , T1 = ( 273 + 36)K = 309K P2 = 505 torr = (505 x 0.00132) atm = 0.67 atm , T2…

Q: Which of the following substances would have the lowest vapor pressure at 298K?   A. Acetone…

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Q: is 92.14 J · mol¬1 · K-!. The AHvap of a certain compound is 24.36 kJ - mol- and its ASvap What is…

A:

Q: Ethanol has a normal boiling point of 78.3 C. Why is the normal boiling point higher than methanol…

A: Boiling point of any molecule depends on 2 things ( in the same priority order as they are…

Q: The heat of vaporization of water at 373 K is 40.7 KJ/mol.  When 4.50 g of steam condenses at 373 K,…

A: Number of moles of water (steam) can be calculated as follows: No.of moles of water = massmolar…

Q: Why does the antifreeze ingredient ethylene glycol (HOCH₂CH₂OH;Μ=62.07g/mol ) have a boiling point…

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Q: Suppose you have two colorless molecular liquids, one boilingat -84 °C, the other at 34 °C, and both…

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Q: Given that the normal boiling point of CH3COCH3 is 56 °C, which of the following statements about he…

A: The normal boiling point of CH3COCH3 is 56oC and the process is given as : CH3COCH3g,74oC,1 atm…

Q: Chloroform, CHCl3, was once used as an anesthetic. Its vapor pressure is 197 mm Hg at 23 degrees…

A: Heat of vaporization of CHCl3 can be calculated using the given data by applying Clausius- Clapeyron…

Q: Chloroform, CHCl3, a volatile liquid, was once used as an anesthetic but has been replaced by safer…

A: The question is based on the concept of boiling. we have to identify the vapour pressure at the…

Q: 1.b) Arrange the following substances in order of increasing boiling point and explain your answer:

A: ANSWER IS ;

Q: A liquid has a ΔH°vapof 32.7 kJ/mol and a boiling point of 124°C at 1 atm. What is its vapor…

A: Given: Enthalpy of vaporization (ΔHvap) = 32.7 kJ/mol. Vapor pressure (P1) = 1 atm (normal boiling…

Q: If 42.0 kJ of heat is added to a 32.0-g sample of liquid methaneunder 1 atm of pressure at a…

A: Since the heat added is very high (42000 J). And since the temperature of the methane was already…

Q: The greater the molar heat of vaporization of a liquid, the greater its vapor pressure. Is this true…

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: How much energy (in kJ) is required to convert 25.0 g of liquid water at roomtemperature (25.0°C) to…

A: Problems on thermochemistry

Q: The AHvap of a certain compound is 28.24 kJ · mol¬ and its ASyap is 68.08 J · mol¬ · K-!. What is…

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Q: following standard boiling points are given (at 1 atm): (a) water, 100°C…

A: Answer is d) diethyl ether CH3-CH2-OCH2-CH3

Q: Which of the following substances would have the highest vapor pressure at 298 K? A) propanol (b.p.…

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Q: Question 14 of 34 Submit What quantity of heat, in kJ, is required to convert 50.0 g of ethanol…

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Q: 4.How much energy is required to vaporize 48.7 g of dichloromethane (CH2Cl2) at its boiling point,…

A: # We have 48.7 g of the dichloromethane, and ∆Hvap is 31.6 KJ/mol # we have to calculate the amount…

Q: Hydroquinone is an antioxidant that is also used as a photographic reducer and developer. The normal…

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Q: What is the molar heat of vaporation (ΔHvap) in kJ/mol of a liquid that has a vapor pressure of 641…

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Q: If 42.0 kJ of heat is added to a 32.0-g sample of liquid methaneunder 1 atm of pressure at a…

A: Introduction: Specific heat equation: The specific heat is the quantity of heat per unit mass…

Q: (Q43) The normal boiling point of acetone is 56.1°C and its AHvap at its boiling point is 29.1…

A: Given: Boiling point of acetone = 56.1oC  ∆Hvap = 29.1 kJ/mol To determine Vapour pressure (atm) at…

Q: The normal boiling point of mercury (Hg) is 356.7 °C. What is the vapor pressure of mercury at 338.0…

A: We have given that Normal boiling point of Mercury = T1 =  356.7 °C = 629.7K  at pressure of  = P1 =…

Q: 5. How much energy (kJ) is required to convert a 8.0 g ice cube at -15°C to liquid at +45°C? AHfus =…

A: So here the solution will be as:- First we will warm 8.0g of ice cube at -15 °C to 0°C. The equation…

Q: 2) You are given the following data. Which of the liquids would you expect to have the highest vapor…

A: Boiling point :- The temperature at which the vapor pressure of anyliquid is equal to atmospheric…

Q: A.Estimate the boiling points of methanol and chloroform. B.Based on your knowledge of…

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Q: Formula: C3H6O Melting Point: -94.0°C Boiling Point: 56.0°C Density of liquid: 0.791 g/mL Heat of…

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Q: The ΔHvap of a certain compound is 46.73 kJ·mol−1 and its ΔSvap is 64.96 J·mol−1·K−1. What is the…

A: The relationship between the ΔHvap and ΔSvap and T is given as  ΔHvap / T = ΔSvap  where T = boiling…

Q: 11.6 The molecules Ethyl methyl ether Propanol have the same molecular formula (C3H8O) but different…

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Q: LOH CH3 - v A A. 1- HIGHEST BOILING POINT V B B. 5 - LOWEST BOILING POINT C.4 D.2 V E E. 3

A: Boiling point is directly proportional to intermolecular forces of attraction as well as the…

Q: The AHvap of ethanol is 38.56 kJ/mol, and its normal boiling point is 351.52K. What is its boiling…

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Q: The AHvap of a certain compound is 17.58 kJ - mol and its ASan is 75.86 J. mol-. K-. What is the…

A: Given-> ∆Hvap = 17.58 kj/mole = 17580 KJ/mole (1Kj = 1000J) ∆Svap= 75.86 J.mole-1.K-1

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A: Given :  Match the following questions :

Q: HO, 5. а. b. С. H H H H H-C-C-o H H H HH H H3C CH3 Arrange the above liquids in order of increasing…

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Q: Dichlorodifluoromethane (CF2C12) is a CFC (chlorofluorocarbon) molecule that used to be used as a…

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Q: point of isooctane, a gasoline component, as 99.2ºC and its enthalpy of vaporization as 35.76 kJ…

A: Enthalpy of vapourisation = 35760 J/mol  R = 8.314 J/Kmol  T1 = 99.2°C = 99.2+273 = 372.2 K  P1= 1…