A determination of the density of a gas or vapour can provide a quick estimate of its molar mass. The density of a gaseous compound was found to be 1.23 g dm-3 at 330 K and 25.5 kPa. What is the molar mass of the compound?

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A: Mole fraction is ratio of the mole of the substance to the total no. Of moles present in the…

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Q: 20.7 cm3 of a pure vapour, at 1.136 atm, and 98.3 °C has a mass of 0.0603 g. Calculate the molar…

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Q: 17.6 cm3 of a pure vapour, at 1.153 atm, and 98.5 °C has a mass of 0.0520 g. Calculate the molar…

A: Given :-  pressure = 1.153 atm  Volume = 17.6 cm3  Temperature = 98.5°C  mass = 0.0520 g  To…

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Q: Rearrange the van der Waals equation of state, p = nRT/(V − nb) − n2a/V2(Topic 1C) to give an…

A: The Vanderwaal’s equation of state is described as,

Q: A methane, CH4, molecule may be considered as spherical, with a radius of 0.38 nm. How many…

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Q: In the following balanced reaction: 2Al(s) + 6HCl(aq) → 2AlCl3(s) + 3H2(g) 2.32 g of Al react…

A: Given: The temperature of H2 gas, (T) = 25oC = (25 + 273) = 298 K. The molar mass of Hydrogen atom =…

Q: In the following balanced reaction: 2Al(s) + 6HCl(aq) → 2AlCl3(s) + 3H2(g) 2.32 g of Al react with…

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Q: Consider Argon (Ar) gas at a pressure of 1 bar and temperature of 300 K. The equivalent hard sphere…

A: We will be using the following formulae for solving the given problems: 1. PV=nRT .. (1) Here, 'P'…

Q: Gallium melts just above room temperature and is liquid overa very wide temperature range 130–2204…

A: In a barometer, the relationship between pressure and density is given as :

Q: 19.7 cm3 of a pure vapour, at 1.092 atm, and 99.0 °C has a mass of 0.0466g. Calculate the molar mass…

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Q: Derive an expression for ⟨vn⟩1/n from the Maxwell–Boltzmann distribution of speeds.

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Q: 3. Calculate the collision frequency, z, and the collision density, Zaa, in H;S (d = 360 pm) at 75 C…

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Q: (a) To what temperature must a 1.0 L sample of a perfect gas be cooled from 25 °C in order to reduce…

A: Given: Initial volume = 1.0 L = 1000 cm3  Initial temperature = 25 oC And final volume = 100 cm3

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Q: The density of rhombic sulfur is 2.070 g cm-3 and that of monoclinic sulfur is 1.957 g cm-3. Can the…

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Q: An effusion cell has a circular hole of diameter 2.50 mm. If the molar mass of the solid in the cell…

A: Given: Vapor pressure of gas = 0.835 Pa Temperature = 400 K Molar mass of solid = 260 g/mol. = 0.260…

Q: In the following balanced reaction: 2Al(s) + 6HCl(aq) → 2AlCl3(s) + 3H2(g) 2.32 g of Al react with…

A: Answer :-  V = 3.35 (L) Volume of hydrogen gas produced by the reaction of 2.32 g of aluminum metal…

Q: 4. Consider a sample of gas at 393 K and 22 atm. (a) Calculate the molar volume V (L/mol) of the…

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Q: The best laboratory vacuum pump can generate a vacuum of about 1 nTorr. At 25°C and assuming that…

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A: We are given that System is initially at  Pressure=Pi Temperature=Ti Volume=Vi

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A: Diffusion The movement of particles (ions, atoms, molecules ) from higher concentration to lower…

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Q: Q2: Calculate the mole fraction of 15 % (w/w) C6H12O6?

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Q: The diameter of a Ne atom is 140 pm. What is the mean free path in nm of 0.5 mol Ne confined in 5 L…

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Q: The diameter of an Xe atom is 216 pm. What is the mean free path in nm of 0.75 mol Xe confined in 7…

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Q: What would be the height of the column in a barometerif the external pressure was 101 kPa and…

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Q: A vessel of volume 22.4 dm3 contains 1.5 mol H2(g) and 2.5 mol N2(g) at 273.15 K. Calculate (i) the…

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Q: Determine the molar density, in mol/dm3, of liquid butyraldehyde at 201.5 K.

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Q: 4. The density of a gaseous compound was found to be 1.23 kg/m 3 at 330 K and 20 kPa. What is the…

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Q: 6. What is the pressure/temperature ratio of 100. moļecules in 10. nm at 300. K?

A: Given:  Number of molecules N = 100 Volume = 10nm3 T = 300 K

Q: The mass density of a gaseous compound was found to be 1.23 kg m−3 at 330 K and 20 kPa. What is the…

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Q: What is the contribution to the total molar energy of (a) the kinetic energy, (b) the potential…

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Q: Gallium melts just above room temperature and is liquid overa very wide temperature range (30–2204…

A: In a barometer, the relationship between pressure and density is given as :

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Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. This theory or gas law gives a molecular interpretation of the pressure and temperature of a gas and is consistent with gas laws and Avogadro’s hypothesis. This theory is very helpful to correctly explain the specific heat capacities of many gases, kinetic energy and it also explains the transport qualities such as viscosity, thermal conductivity, and diffusion with molecular parameters. As stated in the kinetic-molecular theory, the temperature of a substance or gas particle is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles, called average kinetic energy.