Chloroform, CHCl3, was once used as an anesthetic. Its vapor pressure is 197 mm Hg at 23 degrees Celsius, and 448 mm Hg at 45 degrees Celsius. Estimate its heat of vaporization and normal boiling point.

Q: Methanol, CH3OH, has a boiling point of 337.85 K and a melting point of 175.55 K. Its heat of fusion…

A: Given : Mass of methanol = 16.02 g Initial phase of methanol = solid Initial temperature of methanol…

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

A:

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

A: Given data for vapor pressures at different temperatures are :

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

A: Since the relationship between vapour pressure and temperature is given by where P2 = vapour…

Q: A sample of C3H4 B42 has a normal boiling temperature of 131.5 C. The enthalpy of vaporization for…

A: Given that, Normal Boiling point, T1 = 131.5 oC = 131.5+ 273 = 404.5 K Pressure (P2) = 540 mm Hg ,…

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: Ethanol has a heat of vaporization of 38.56kJ/mol38.56kJ/mol and a normal boiling point of 78.4 ∘C…

A: Given,The heat of vaporization of ethanol, ∆Hvap = 38.56kJ/mol .The normal boiling point of ethanol,…

Q: The vapor pressure of water at 25 degrees celsius is 23.76 torr. If 1.25 g of water is enclosed in…

A: The pressure of water vapor is calculated in the units of atm as follows:

Q: Determine the normal boiling point of a liquid with vapor pressure 63.8 mmHg at 36.50°C, given that…

A: Accoding to Clausius Clapeyron equation,At normal boling point, the vapor pressure equal= 760 mmHg

Q: Determine the normal boiling point of a liquid with vapor pressure 63.8 mmHg at 36.50 degrees  C ,…

A: Given Information -  P1 = 63.8 mmHg T1  = 36.50 + 273 K = 309.50 K P2  = 760 mmHg T2  = ?  ∆Hvap =…

Q: Determine the vapor pressure in mm Hg of a substance at 45 C if its normal boiling point is 115 C…

A:

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: The molar heat of fusion of benzene (C6H6) is 9.92 kJ/mol. Its molar heat of vaporization is 30.7…

A: The question is based on the concept of chemical thermodynamics. We have  to calculate  heat…

Q: Determine the normal boiling point of a liquid with vapor pressure 63.8 mmHg at 56.50°C, given that…

A: Given: P1= 1 atm= 760 mm Hg P2= 63.8 mm Hg T2= 56.50°C= 56.50+273.15 K= 329.65 K ∆Hvap=43.5 kJ/mol…

Q: To what temperature would you have to heat Zn(l) to cause its vapor pressure to become 155.9 mm Hg…

A: The vapor pressure of a liquid is the pressure exerted by the vapor of a liquid when the gas and the…

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

A: Clausius Clapeyron equation-This gives relation between pressure and temperature if enthalpy of…

Q: Benzaldehyde, C6H5CHO, has a normal boiling point of 179 oC and a critical point at 422 oC and 45.9…

A:

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

A:

Q: The vapor pressure, P, of bromine at several temperatures, T, is given in T (K) Р (Torr) the table.…

A:

Q: The molar enthalpy of vaporization of hexane (C6H14) is 28.9 kJ/mol, and its normal boiling point is…

A: Clausius – Clapeyron equation is used to calculate the vapor pressure at another temperature…

Q: Given the information below, sketch the phase diagram of Nitrogen: Triple point: 0.1252 atm, -210°C…

A: The diagram which shows the physical change of substance at a particular temperature and pressure is…

Q: To what temperature would you have to heat Zn(1) to cause its vapor pressure to become 284.7 mm Hg…

A: Given :-  Heat of vaporization = ∆Hvap =  131.00 kJ/mol = 131000 J/mol   Normal boiling point of Zn…

Q: The vapor pressure of water at 27°C is 25 torr, and the heat of vaporization of water at 27°C is…

A:

Q: Use the phase diagram of Substance X below to find the melting point of X when the pressure above…

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

Q: The ethalpy of vaporization of liquid mercury is 59.11 kj/mol. What quantity of energy as heat is…

A: Enthalpy of vaporization is the amount of heat added to the liquid to transform into the vapor.

Q: How many grams of ethanol, C2H5OH,C2⁢H5OH, can be boiled with 369.4 kJ369.4 kJ of heat energy? The…

A: Given: Heat energy = 369.4 kJ Molar heat of vaporization of ethanol = 38.6 kJ/mol Known: Molar mass…

Q: Dioxane, C4H8O2, has an enthalpy of fusion of 145.8 J g–1 and its melting point temperature is 11.0…

A: Given,Enthalpy of fusion of dioxane = 145.8J/g.Melting point temperature = 11.00C.Mass of dioxane =…

Q: The enthalpy of vaporization of Substance X is 20.0 mol and its normal boiling point is – 103. °C.…

A: The Clausius-Clapeyron equation is as follows,               Given: Enthalpy of vaporization of X =…

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: Arrange the following in order of increasing boiling point? Liquid A (vapor pressure at 25°C) = 23.8…

A: The intensity of the intermolecular forces determines the vapor pressure and boiling point. The…

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: From the plot of vapor pressures vs temperature above, estimate the boiling point of carbon…

A: Boiling point of a liquid is defined as the temperature at which the vapor pressure of the liquid…

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: 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: Toluene, C6H5CH3, is a liquid used in the manufacture of TNT. Its normal boiling point (at 760 torr)…

A: Concept introduction: Clausius-Clapeyron equation is used to find the vapor pressure at one…

Q: The vapor pressure of liquid cobalt is 400 mm Hg at 3.03x10³ K. Assuming that its molar heat of…

A: Given, P1 = 400 mm T1 = 3030 K T2 = 3050 K □H = 450 kJ/mol Using Von't Hoff reaction  ln(P2/P1) =…

Q: The triple point of iodine is at O.12 atm and 115 °C. Thus, liquid l2 is more dense than l2 (s).…

A: Triple point is the point at which all the three states of matter exist together at a given…

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

A:

Q: How much heat energy is required to convert 84.0 g (1.82 mol) of liquid ethanol (C2H5OH) at 50.0 °C…

A: Given: Specific heat capacity of ethanol = 2.45 J/g⋅ oC Mass of ethanol = 84.0 g moles of ethanol =…

Q: What amount of Heat must be supplied to 15 g of ice at -24 degrees Celsius to convert it to steam at…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: Find the boiling temperature at 760 torr of an isomer of octane, C3H18, if its enthalpy of…

A: Enthalpy of vaporization and boiling temperature can be calculated by using Claussius Clapeyron…

Q: What is the vapor pressure of ethanol at 55 degrees C ? The boiling point is 78.4 degress C and the…

A: Given:Enthalpy of vaporization (ΔH) = 42.3 kJ/mol.Vapor pressure (P1) = 760 mmHg (normal boiling…

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: What is the heat of vaporization(kj/mol) if it takes 3452 J of heat to completely vaporize 2.68…

A: Consider the given information is as follows; Heat of vaporization = 3452 J = 34521000 kJ=3.452 kJ…

Q: Determine the normal boiling point of a liquid with vapor pressure 63.8 mmHg at 64.50°C, given that…

A: We are given that the vapor pressure of the gas is 63.8 mmHg at 64.5°C and the molar heat of…

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: Units of pressure: •1 atm = 101325 Pa (pascal) •1 atm = 760 torr (mmHg) anssaid solid iquid vapour…

A: Phase diagram tells us when the  substance mixture or pure will exist in which state at a particular…

Q: Dichloromethane (CH2Cl2, Hvap= 25 kj/mol) has a vapor pressure of 330 mm Hg at 20oC. What is the…

A: Given,ΔH = 25 kj/molP2 = 330 mm Hg

Q: The figure shows the phase diagram corresponding to the element sulfur. Sulfur exists as liquid,…

A: The graph of phase change with P vs T is given as:

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.