Determine the enthalpy of vaporization, in kJ/mol, of C₂H₅OH if 19.7 kJ of heat is needed to vaporize 0.500 moles of C₂H₅OH.

Q: Determine the final state and its temperature when 150.0 kJ of heat are added to 50.0 g of water at…

A: First water will be heated upto 100 degrees , then vaporize into gas followed by heating of steam.

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: 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…

Q: What is the expected value for the heat of sublimation of acetic acid, in kJ/mol, if its heat of…

A: As we know that – According to Hess's law of constant heat summation, the heat absorbed or evolved…

Q: enthalpy of vaporization for water is 44.0kJ/mol and the vapor pressure of water at 56oC is…

A: The Clausius – Clapeyron equation is shown below: Where; P1 is vapor pressure at temperature T1 P2…

Q: Determine the enthalpy of vaporization, in kJ/mol, of C H, if 14.5 kJ of heat is needed to vaporize…

A: The given molecule is C6H14 No. Of moles of molecule vapourizes = 0.500 moles Heat required = 14.5…

Q: Given this phase diagram and the data table, how do I arrive at the heat of vaporization (in…

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Q: Which of the following substances would you expect to have the higher vapor pressure: CH3OH or…

A: To Find: To find which substance has the highest vapor pressure among CH3OH and CH3Cl.

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

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Q: It was determined that 63.5 kJ of heat is needed to vaporize enough aniline (CsHsNH2) liquid at its…

A: First of all, we need to calculate the number of moles of aniline which is vaporized. Volume of…

Q: In kJ/mol, what is the enthalpy kf vaporization, Hvap, for a substance that has a vapor pressure or…

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

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

A: When a liquid converts into a vapor state it absorbs heat. The amount of heat absorbed when one mole…

Q: The vapor pressure of ethanol is 400.0 mm Hg at 63.5oC (336.65K).  Its molar heat of vaporization is…

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Q: How many grams of ethanol, C,H,OH, can be boiled with 473.1 kJ of heat energy? The molar heat of…

A: Given: Heat energy available, E=473.2kJ Molar heat of vaporization of ethanol, Cv = 38.6kJ/mol   To…

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: How much heat (in kJ) is required to convert 423 g of liquid H2O at 24.8°C into steam at 147°C?…

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Q: The enthalpy of vaporization of Substance X is 16.0kJmol and its normal boiling point is 123.°C.…

A: We have to Calculate the vapor pressure of X at −35°C.

Q: Suppose that 117.2 J of heat energy is required to completely vaporize 4.3 g of a pure liquid. If…

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Q: Why is it important that the heat capacity, latent heat of fusion and latent heat of vaporization of…

A: Heat capacity is the anount of heat required to  increase a particular amount of the substance.…

Q: To vaporize 45.0 g CCl4 requires 9.69 kJ at its normal boiling point of 76.7 oC and 1 bar pressure.…

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Q: The heat of vaporization for CH4 is 152 cal/g. How much heat is needed (in calories) to vaporize 0.4…

A: The heat of vaporization for CH4 is = 152 cal/g The amount of heat is needed (in calories) to…

Q: Chloroform has a normal boiling point of 61.15 °C and an enthalpy of vaporization of 31.4 kJ/mol.…

A: The relation between the vapor pressure and temperature is given by Clausius Clapeyron equation.

Q: calculate the delta Hvap for a substance that has a vapor pressure of 35.0 torr at 25.0C and a vapor…

A: The Clausius–Clapeyron equation relates temperature and vapor pressure and helps us to calculate…

Q: Determine the enthalpy of vaporization, in kJ/mol, of CH3OH if 19.0 kJ of heat is needed to vaporize…

A: The enthalpy of vaporization (ΔHvap), also known as the heat of vaporization, is the amount of…

Q: How much energy is required to vaporize 188 g of butane (C 4H 10) at its boiling point, if its ΔH…

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Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy (kJ) would be needed to melt…

A: The amount of heat required to change 1 g of solid to liquid at the same temperature is known as…

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

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Q: liquid has vapor pressure is 54.6 torr at 20 °C and 300.0 torr at 82°C. Calculate its heat of…

A: The Clausius-Clapeyron equation is used to relate temperature and vapor pressure of a liquid. The…

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

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Q: Using the heat of vaporization of benzene, 395 J/g, calculate the grams of benzene that will…

A: Given that heat of vaporization of benzene is 395 J/g and also given that 9.28 k J is removed at its…

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…

A: The heat energy formula shows relation of mass specific heat capacity and change in temperature. The…

Q: Which one of the following has the highest enthalpy of vaporization, AHvap? Assume the same,…

A: The enthalpy of vaporization (∆Hvap), also known as the (latent) heat of vaporization or heat of…

Q: What amount of heat (in KJ) is required to convert 25.6g of an unknown solid (MM =83.21g/mol) at…

A: Heat will be used in three processes,  1)   rising of temperature of solid till freezing point. 2)…

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

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Q: Determine the enthalpy of vaporization, in kJ/mol, of H₂O if 20.4 kJ of heat is needed to vaporize…

A: Given: The energy required to vapourize the 0.5 moles of H2O = 20.4 KJ

Q: 7. The boiling point of hexane is 69.0°C. Estimate (a) its molar enthalpy of vaporization and (b)…

A: According to Trouton’s rule, the expression for entropy of vaporization is as follows,…

Q: Conversion of 0.852  g of liquid water to steam at 100.0°C requires 1.89  kJ of heat. Calculate the…

A: To calculate the molar enthalpy of vaporization, it is required to calculate the number of moles of…

Q: For pentane, the ∆H° of vaporization is 26.22 kJ/mol and the ∆S° of vaporization is 87.88 J/mol･K.…

A: Given, standard enthalpy of vaporization ∆H°(vap) =26.22 kJmolstandard entropy of vaporization…

Q: How many joules are needed to change 20g of water at 25°C to steam at 150°C? Assume the specific…

A: We have mass of water = 20 g            Initial temperature (T1) = 250C            Final temperature…

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

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Q: 9. The heat of vaporization of water is 40.7 kJ/mol. At what Temperature is the Vapor Pressure 145…

A: Boiling point is the temperature at which vapour pressure of liquid become equal to atmospheric…

Q: 6. The heat of vaporization for methane (CH) is 9.2 kJ/mol. How many kJ of heat energy are required…

A: Concept is based on molar enthalpy.

Q: How much energy is required to vaporize 178 g of butane (C 4H 10) at its boiling point, if its ΔH…

A: · m=Mass of Butane C4H10 = 178 g· ∆Hvap=Enthalpy of vaporization = 24.3 kJmol We need to calculate…

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: How much energy is needed to turn 10.0 g of water at 25°C to steam ( = 6.01 kJ/mol;  = 40.76 kJ/mol;…

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Q: Calculate the total heat required to raise the temperature of 550 mL of H2O from 278 K to 298 K, and…

A: Volume of H2O = 550ml Ti = initial temp. = 278K Tf = final temp. = 298K Density of H2O = 1g/ml…

Q: Determine the enthalpy of vaporization, in kJ/mol, of CH₃OH if 19.0 kJ of heat is needed to vaporize…

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Q: From the following vapor pressure data for ethanol, an estimate of the molar heat of vaporization of…

A: use clausius clapeyron equation to find the molar heat of vaporization of Ethanol  Let  Initial…

Q: at 100.0C the molar heat of vaporization of water is 40.67KJ/mol. at 25.0C approximately room…

A: When an athlete work out, the water is vaporized at room temperature. The heat of vaporization of…

Q: Determine the vapor pressure (in mm Hg) of a substance at 29°C, whose normal boiling point is 76°C…

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