Mercury (Hg) vapor is toxic and readily absorbed from the lungs. At 20.∘C, mercury (ΔHvap = 59.1 kJ/mol) has a vapor pressure of 1.20 x 10-3 torr, which is high enough to be hazardous. To reduce the danger to workers in processing plants, Hg is cooled to lower its vapor pressure. At what temperature would the vapor pressure of Hg be at the safer level of 5.0 x 10-5 torr?

Q: Which of the foHowing would be expected to have the highest vapor pressure at room temperature? O…

A: To Find: The substance with highest vapor pressure at room temperature.

Q: Calculate the heat energy released when 19.5 g19.5 g of liquid mercury at 25.00 °C is converted to…

A: Given: Mass of mercury = 19.5 g. Initial temperature of mercury = 25.00 oC = 298.15 K  And the final…

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: The boiling point of benzene is 80ºC. Which pair of samples will have the same average kinetic…

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

Q: A 389.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: Heat absorbed by substance to convert it from solid to liquid.

Q: Which of the following would be expected to have the lowest vapor pressure at room temperature?…

A: More is the volatility of compound; more will be the vapour pressure of compound.

Q: At 47.77 °C, the vapor pressure of a particular compound is 8.53 kPa, and at 143.91 °C, its vapor…

A: Given that: temperature T1 = 47.77 °C = 47.77 + 273 = 320.77 K pressure P1 =  8.53 kPa temperature…

Q: Carbon dioxide is liberated by the reaction of aqueous hydrochloric acid with calcium carbonate:…

A: The ideal gas equation is as follows,                               Where, n is the amount of gas…

Q: A 417.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A:

Q: What is the enthalpy change in kJ when 276.6 g of steam condenses into water at 100. °C? The…

A: Given: Mass = 276.6 g Enthalpy of vaporization = 45.6 kJ/mol

Q: The vapor pressure, P, of bromine at several temperatures, T, is given in the table.

A:

Q: At a certain elavation, the boiling point of water is 98.5C. How much energy, in kilojoules, is…

A: Heat energy needed,Q= 11.0 KJ

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: 12. Patients with a high body temperature are often given "alcohol baths". The heat of vaporization…

A: Heat of vaporization means the heat required to covert a fixed amount of liquid to gas.

Q: Suppose that 1.01 g of rubbing alcohol (C3H8O) evaporates from a 65.0 g aluminum block. Aluminum has…

A: Given data:

Q: The vapor pressure of methanol (CH₃OH) at 25.0°C is 127.2 torr. A 4.35-g sample of methanol is…

A: Firstly find out how much methanol would vaporise to attain saturation vapour pressure by using…

Q: Which has the lowest normal boiling point? N2 NaCl Hg

A: Normal boiling point is the temperature at which a liquid boils at 1 atmosphere of pressure.…

Q: 125 g of dry ice (solid CO2) is dropped into a beaker containing 500g of water at 66°C. The dry ice…

A:

Q: The following information is given for tin at latm: boiling point = 2270 °C AH-ap(2270 °C) = 230…

A: The mass of liquid tin is = 22.4 g The temperature of the liquid tin is = 232oC The heat of fusion…

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: What is the vapor pressure of ethanol (in mmHg) at 51.3°C if its vapor pressure is 400.0 mmHg at…

A: Concept Introduction: Vapor pressure is otherwise known as equilibrium vapor pressure. It can be…

Q: Physical Chemistry  The normal boiling point of water is 100 oC. If you want to make tea in another…

A: For calculation of boiling point of water at 700 mmHg, we can use Following formula -   log (P2/P1)=…

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

A: Plot of  ln(P) Vs 1/T, to determine the enthalpy of vaporisation.

Q: 1. How many joules of energy must be absorbed by 50.0 g of liquid water at 50°C to convert it to…

A: Dear Student, According to Bartleby guidelines we have to answer first question (in multiple…

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

A:

Q: 22. The molar enthalpy of vaporization of an organic compound is 2kJ/mol, and its normal boiling…

A: The molar enthalpy of vaporization of an organic compound is, ∆Hv=2kJ/mol∆Hv=2000 J/mol The normal…

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

A: pairs of substances has the higher vapor pressure at 298 K given is Option D A) H₂O, H₂Se B) CF₄,…

Q: Water has a vaporization enthalpy of 2256 J/g, making it the largest of any molecular substance. For…

A: The enthalpy of vaporization depends on the intermolecular forces present between the molecules

Q: The vapor pressure of benzene is 224 mmHg at 45 °C and 648 mmHg at 75 °C. (a) Find the enthalpy of…

A:

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

A: Vapour pressure of any substance is the partial pressure of the vapours present in equilibrium with…

Q: The freezing point of ammonia (NH3,17.04 g/mol) is -77.73°C. In an experiment, 367.2 grams of solids…

A: Given,Mass of water = 250gSpecific heat of ammonia = 4.742 J/go C

Q: A 417.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: To solve this problem we will use the formula  q = m•c•∆T  Where, q = heat absorbed or released  m =…

Q: Which of the following would be expected to have the highest vapor pressure at room temperature?…

A: More is the volatility of compound, more will be the vapour pressure of compound.

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

A: The given data is as follows: T(K) P(KPa) 225 3.66 675 5.43

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: For butane, the ∆H° of vaporization is 22.4 kJ/mol and the ∆S° of vaporization is 82.3 J/mol･K. At…

A:

Q: Fermentation of glucose produces ethyl alcohol and carbon dioxide; C 6H 12O 6(l) → 2 C 2H 5OH(l) + 2…

A: The fermentation of the species glucose can be decomposed into the species carbon dioxide along with…

Q: Which one has the highest vapor pressure and why? a. Alcohol b. Sea water c. Water d. Mercury e.…

A: at boiling point the vapor pressure of the substance that equal to atmospheric pressure  as the…

Q: At room temperature, 25°C, the vapor pressure of water is 23.8 Torr. Calculate the vapor pressure of…

A:

Q: A liquid has a ΔH°(vaporization) of 33.3 kJ/mol and a boiling point of 125°C at 1 atm. What is its…

A: Vapor pressure is a thermodynamic equilibrium with its concentration at temperature is a closed…

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: The vapor pressure of ethanol (C2H5OH) at 19 °C is 40.0torr. A 1.00-g sample of ethanol is placed in…

A: Pressure = 40.0 torr Mass of sample of ethanol = 1.00 g Volume of container = 2.00 L Temperature =…

Q: The vapor pressure of ethanol is 1.00 x 10“ mmHg at 34.90°C. What is its vapor pressure at 59.75°C?…

A: The given temperature in Kelvin is calculated as shown below. T1=34.90oC+273.15=308.05…

Q: The following information is given for cobalt at 1atm: 3097°C AHvap = 6.60 kJ/g 263 J/g boiling…

A: Given the mass of liquid cobalt sample, m = 39.8 g  initial temperature of liquid cobalt, Ti = 1495…

Q: 11. The vapor pressure of ethanol, C,H,OH, at 50.0°C is 233 mm Hg, and its normal boiling point at 1…

A: Given: P1 = 233 mmHg T1 = 50.0 oC = 323.15 K P2 = 1 atm = 760 mmHg  T2 = 78.3 oC = 351.45 K The gas…

Q: Hydrogen bonds are relatively strong intermolecular forces that are important for many of the…

A: Ionic bond: The strongest interionic electrostatic interactions formed between oppositely charged…

Q: Lead has a melting point of 327 °C, its specific heat capacity is 0.13 J/g °C and its molar enthalpy…

A: The given problem can be solved by the following calculations as; Heating lead from 20.4°C  to…

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…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.