(a) Why is the heat of fusion (ΔHfus) of a substance smaller than its heat of vaporization (ΔHvap)?(b) Why is the heat of sublimation (ΔHsubl) of a substance greater than its ΔHvap?(c) At a given temperature and pressure, how does the magnitude of the heat of vaporization of a substance compare with that of its heat of condensation?

Q: Which type of intermolecular force accounts for each ofthese differences? (a) CH3OH boils at 65 °C;…

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Q: If the vapor pressure is 0.75atm at 55 degrees C, what is the vapor pressure at 95 degrees C? Heat…

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Q: How much energy in calories is absorbed when 50.0 g of ice cubes melt? The heat of fusion of H 2O is…

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Q: The vapor pressure of water at 25 ∘C is 23.8 torr, and the heat of vaporization of water at 25 ∘C is…

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Q: Why do the boiling points of the noble gases increase in the order He < Ne < Ar < Kr <…

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Q: Which type of intermolecular force accounts for each ofthese differences? (a) CH3OH boils at 65 °C;…

A: Hello. There are multiple subparts in the question. The first three subparts have been solved. To…

Q: The vapor pressure of water at 25 °C is 23.76 torr. If 1.25 g of water is enclosed in a 1.5-L…

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Q: Does SF6 (boiling point = 16°C at 1 atm) behave more ideally at 1508C or at 208C? Explain.

A: Gases are the species whose molecules are connected to each other by Vander Waal forces.

Q: Suggest an explanation for the observation that the heat of fusion of a substance is always smaller…

A: The heat of fusion is the amount of heat required to convert the solid state of the substance into…

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Q: At room temperature, F2 and Cl2 are gases, Br2 is a liquid, and I2 is solid. This is because of…

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Q: Estimate the molar heat of vaporization of a liquid whose vapor pressure doubles when the…

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Q: How many grams of ice at -5 degrees C must be mixed with 50g of water at 35 degrees C to reach an…

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Q: How much heat is required to convert 422 g of liquid H2O at 23.5 °C into steam at 150 °C?

A:

Q: 3. (a) How much heat must be absorbed by ice of mass m=800 g at –20°C to take it to the steam at…

A: The heat needed to raise the temperature of ice from – 20 0C to 0 0C is:  Q1 = m c ΔT        =…

Q: A sealed 15-liter flask initially containing 2 grams of H20 (L) at 35oC is allowed to come to…

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Q: If the melting point of ice changed to 3.0 °C, how would this affect the molar enthalpy of fusion…

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Q: Would you expect London dispersion forces to be more important for Xe or Ne? Why? (The atomic radius…

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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…

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Q: Which of the following pairs of substances has the higher vapor pressure at 298 K given first? A)…

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Q: Calculate the heat required to convert 5.5 g of ice at –5°C to steam at 110°C?

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Q: Calculate the amount of heat needed to bring 10.00 g of ice from -15°C to 110°C. Assume that the…

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Q: How much heat in cal is necessary to vaporize 685 g of h2o at 100 degrees c?

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Q: (a) Why is the heat of fusion (ΔHբᵤₛ) of a substance smallerthan its heat of vaporization…

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Q: What is the molar enthalpy of vaporization of CCI3F when it boils at 23.7°C given that ASvap %3D…

A:

Q: The molar heat of fusion of lithium metal is 3.00 kJ/mol, whereas its heat of vaporization is 147…

A: Given:  Molar heat of fusion of lithium metal = 3.00 KJ/mol  Molar heat of vapourisation = 147…

Q: 4. What would you do to cause a substance to change from a solid phase to a liquid phase at constant…

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Q: The vapor pressure of methanol at 20.0 oC is 97.7 torr. The normal boiling point of methanol is 64.7…

A: Given data,T1(Temperature of methanol)=20.0oC=20.0+273.15=293.15KP1(pressure of methol)=97.7 torrT2(…

Q: Explain why the enthalpies of vaporization of the following substances increase in the order CH4…

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Q: Which compound or element has the lowest boiling point: Cl 2, KI, or LiF?

A: Cl2 element has lowest boiling point. Reason : Least intermolecular attraction forces. Cl2 is a…

Q: How much heat, in joules and in calories, must be added to a 89.1 g chromium block with a specific…

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Q: Question 8 Define fusion. The phase transition from solid to gas. The phase transition from gas to…

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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: What is the heat in kj required to convert 25g of -10 °C ice to 150°C steam?

A:

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: Which of the following properties indicates the presence of strong intermolecular forces in a…

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Q: The vapor pressure of benzene is 100.0 mmHg at 26.1°C and 400.0 mmHg at 60.6°C. What is the boiling…

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Q: Compounds like CCl2F2 are known as chlorofluorocarbons,or CFCs. These compounds were once widely…

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Q: List the following substances in order of decreasing boiling point:CO2, Ne, CH3OH, KF Rank…

A: Boiling point of CO2 = -78.46 °CBoiling point of Ne = -246 °CBoiling point of CH3OH = 64.7 °CBoiling…

Q: Why is the Boiling point of Calcium higher than that of Magnesium?

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Q: What is the pressure in atm of the normal boiling point of C6H6? ____ atmWhat is the pressure in atm…

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Q: The vapor pressure of mercury at 298 K is 0.00270 mmHg. If the normal boiling point of mercury is…

A: Use Clausius Clapeyron equation to solve this,ln P1P2 = ΔHvapR1T2 - 1T1 Given that,T1 = 298 K P1 =…

Q: Paradichlorobenzene is a white crystalline solid which is very soft, has a low melting point, and is…

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Q: State two molecular characteristics of substances that typ-ically form liquid crystals. How is each…

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Q: 6.) Diethyl ether is a volatile, highly flammable organic liquid that is used mainly as a solvent.…

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Q: How much heat must be applied to convert a 1.00 g piece of ice at −10°C to steam at 120°C?

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Q: 18. Which statement best describes boiling point elevation?

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Q: Methyl salicylate, C₈H₈O₃, the odorous constituent of oil of wintergreen, has a vapor pressure of…

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Q: D. Explain what is meant by 'normal boiling point in terms of vapor pressure of a liquid vis-a- vis…

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…