At high altitudes, the ambient air pressure can be significantly less than 1 bar, so water boils at a lower temperature than 100 C. What is the boiling point of water at an altitude where the ambient air pressure is 0.4 bar? The enthalpy of vaporization of water near its boiling point is 40.7 kJ/mol.

Q: Why is the enthalpy of vaporization for water much greater than the vaporization of fusion? What…

A: Since in case of fusion, we just try to lose the packing of the molecules from solid to liquid  And…

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A: From the graph, the temperature at which the pressure of carbon disulfide is 400mm Hg is = 28°C.

Q: The vapor pressure, ?,P, of a certain liquid was measured at two temperatures, ?.T. The data is…

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Q: The vapor pressure of acetone (C;H,O) at 39.5°C is 400 torr. (a) If the boiling point of acetone is…

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Q: The standard enthalpy of vaporization (H°vap) of carbon tetrachloride (CCl4) is 34.6 kJ/mol. The…

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Q: What is the boiling point of water in a pressure cooker with a pressure of 2.00 atm? (The enthalpy…

A: Using clausius - clapeyron equation for finding boiling point of water in pressure cooker  The…

Q: At 20.11 °C, the vapor pressure of a particular compound is 8.22 kPa, and at 146.6 °C, its vapor…

A: Dear student , since you have posted multiple questions we will allow to solve only first question…

Q: 900 800 Carbon disulfide 700 600 Methanol 500 Ethanol 400 Heptane 300 200 100 0. 10 20 30 40 50 60…

A: The curve given is, Given: Vapour pressure of diethyl ether is 400 mm Hg at 18.0 oC.

Q: Calculate the enthalpy of vaporization of a liquid that has a vapor pressure of 144.589 mmHg at…

A: We will solve this question using clausius clapeyron equation.

Q: At 25 °C gallium is a solid with a density of 5.91 g/cm^3. Its melting point, 29.8 °C, is low enough…

A: Given information:Density of gallium is 5.91 g/cm3 at 25oDensity of gallium at its melting point ( 8…

Q: The molar heats of fusion and sublimation of lead are 4.77 and 182.8 kJ/mol, respectively. Estimate…

A: UsIng the relation between molar heat of fusion , sublimation and vaporization we can find molar…

Q: Based on the concept of phase diagrams, what information on the property of liquids can you get from…

A: Phase diagram is a graphical representation of the physical states of a substance under various…

Q: The following information is given for water at latm: boiling point = 100 °C AHvap(100 °C)-40.7…

A: The mass of solid water sample is = 44.1 g The heat of fusion of water at its normal melting point…

Q: How much heat is required to evaporate 100.0 g of liquid ammonia, NH3, at its boiling point if its…

A: Given: Mass of NH3  = 100.0 g ΔHvap = 4.8 kJ/mol

Q: 1. The vapor pressure of a liquid doubles when the temperature is raised from 85.0 to 95.0°C. The…

A: Vapour pressure of the liquid is defined as the pressure exerted by the vapours of liquid on the…

Q: Chloroform, CHCl3, has a normal boiling point of 61.7 oC and has an enthalpy of vaporization of 31.4…

A: Since at normal boiling point, pressure = 1 atm = vapour pressure of liquid  Hence at 61.7 oC vapour…

Q: The phase diagram for carbon is shown.

A: Triple point is considered to be tgat point where 3 phases exist together in the phase diagram

Q: Liquid nitrogen can be used as a cryogenic substance to obtain low temperatures. Under atmospheric…

A: Liquid nitrogen can be used as a cryogenic substance to obtain low temperatures.

Q: The molar enthalpy of vaporization of carbon disulfide is 26.74 kJ/mol , and its normal boiling…

A: Given : Molar enthalpy of vaporization of CS2 = 26.74 kJ/MolNormal boiling point = 46°cTemperature =…

Q: The normal boiling point of water is 100 Celcius and the molar enthalpy of vaporization of water is…

A: Given, The normal boiling point of water (T1) = 100°C = (273.15 + 100) K = 373.15 K Note: pressure…

Q: The vapor pressure of a certain substance increases by 2.7 times as the temperature increases from…

A:

Q: Which has the highest normal boiling point?  H2O  NH3  Li2O  CH4 Which has the least heat of…

A: 1) Higher the intermolecular interaction between molecules, more is the boiling point.  Li2O has…

Q: The Enthalpy of Vaporization of 1-chlorobutane, C4H9Cl, is 30.4 kJ/mol at a boiling point of 78.6…

A:

Q: Determine the heat flow (in units of kJ) when 49.7 g water at 131.3°C is lowered to 82.6°C? molar…

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Q: If it requires 70.4 kJ of heat to boil 1.60 moles of water, what is its enthalpy of vaporization?

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: Given the thermodynamic information below for ethylene glycol (molar mass = 62.068 g/mol): Normal…

A: Initially at 25.0°C , ethylene glycol is in liquid state . So first step would be heating of liquid…

Q: The following information is given for antimony at 1 atm: AHvap(1440 °C) = 195 kJ/mol AHfa(631 °C) =…

A:

Q: The molar heats of fusion and sublimation of lead are 4.77 and 182.8 kJ/mol, respectively. Estimate…

A: Given Data: The heat of fusion is 4.77 kJ/mol. The heat of sublimation is 182.8 kJ/mol.

Q: You have ice at 263 K (-10.0 oC) and 1.0 atm. What could you do to make the ice sublime?

A: The phase diagram of water is shown below.

Q: The slope of the solid - liquid coexistence curve in the water phase diagram is-135atm/K . At 1 atm,…

A:

Q: What is the vapor pressure of Ag at 2365.8 K if its heat of vaporization and boiling point are…

A: boiling point = T1 = 2485.2 K We know that liquid boil at 1 atm pressure So, intial vapor pressure =…

Q: Carbon tetrachloride, CCl4, was once used as a dry cleaning solvent, but is no longer used because…

A:

Q: At 1.4 bar, the boiling point of water is 373 K. At what pressure (in bar) does water boil at 473 K?…

A: Given: Pressure=1.4 barInitial temperature=373 KFinal temperature=473 K∆Hvap=40.65 kJ/mol…

Q: t is known that the enthalpy heat of hot water is 100 oC of 40700 j / mol. Determine the boiling…

A: GivenHeat Enthalpy of water = ∆Hvap = 40700 J/moleTemperature = 100°C = (100 + 273.15) K = 373.15 K…

Q: The vapor pressure, P, of a certain liquid was measured at two temperatures, T. The data is shown in…

A: Here we are required to find the Enthalpy of vaporization .

Q: = What is the vapor pressure of Cu at 2633.8 K if its heat of vaporization and boiling point are…

A: We will use the clausius-clapeyron equation.

Q: Carbon tetrachloride, CCl4, was once used as a dry cleaning solvent, but is no longer used because…

A: The temperature at which the vapor pressure of a liquid becomes equal to an atmospheric pressure is…

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

A:

Q: Calculate the enthalpy of vaporization (AHvap) in kJ/mol for this liquid.

A:

Q: Q3b. Draw and explain the phase diagram of sulfur system. At 200 °C, the specific volume of water…

A:

Q: 3.) What would be the boiling point of ethanol at a pressure of 25 atm. The normal boiling point of…

A: Given: P2 = 25 atm, P1 = 1 atm, T1 = 79°C=349 K. The enthalpy of vaporization is 43.5 kJ/mol.

Q: The standard enthalpy of fusion of aluminum at 933K is 10.9 kJ/mol. How much energy (in kJ) is…

A: Answer: 58.2 kJ energy required to completely melt 144.11 g of aluminium 933 K.

Q: The vapor pressure of liquid SO, is 281.1 mmHg at a temperature of 242.0 K. The enthalpy of…

A: Given: ∆Hvap= 24.9 kJ/mol T1= 242.0 K T2= 250.0 K P1= 281.1 mmHg P2= ?

Q: 90. The normal boiling point of water is 100.00 °C and the enthalpy of vaporization at this…

A:

Q: The vapor pressure of a liquid between 15 C and 35 C fits the expression log(p) = 8.750 – 1625/T…

A: Interpretation -  To determine the enthalpy of vaporization and the normal boiling point of the…

Q: At high altitudes, the ambient air pressure can be significantly less than 1 bar, so water boils at…

A: Given: Normal boiling point of water = 100 oC = 373 K Pressure at boiling point  = 760 mmHg Pressure…

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…