А.Under what conditions of temperature and pressure does a real gas approach idealbehaviour?B.A 7.16 g sample of an anhydrous aluminium chloride produces 1.00 dm³ (10³ m³) ofvapour at 180° C and a pressure of 1.01 x 10° Pa. What is the molecular mass ofaluminium chloride under these conditions?Use the data given at B. to predict whether anhydrous aluminium chloride is ionic orcovalent in the vapour state. Give a reason for your prediction.С.Aluminium fluoride does not melt until the temperature is above 1 200° C. Suggestreasons for the difference in melting points between aluminium chloride and aluminiumfluoride.D.E.Use sodium chloride and copper to:i. explain what is meant by an ionic and metallic bonding (use suitable diagrams).ii. compare electrical conductivities of both in terms of structure and bonding.

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Under what conditions of temperature and pressure does a real gas approach ideal behaviour?

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter1: Gases And The Zeroth Law Of Thermodynamics

Section: Chapter Questions

Problem 1.32E

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Concept explainers

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.

Question

А.
Under what conditions of temperature and pressure does a real gas approach ideal
behaviour?
B.
A 7.16 g sample of an anhydrous aluminium chloride produces 1.00 dm³ (10³ m³) of
vapour at 180° C and a pressure of 1.01 x 10° Pa. What is the molecular mass of
aluminium chloride under these conditions?
Use the data given at B. to predict whether anhydrous aluminium chloride is ionic or
covalent in the vapour state. Give a reason for your prediction.
С.
Aluminium fluoride does not melt until the temperature is above 1 200° C. Suggest
reasons for the difference in melting points between aluminium chloride and aluminium
fluoride.
D.
E.
Use sodium chloride and copper to:
i. explain what is meant by an ionic and metallic bonding (use suitable diagrams).
ii. compare electrical conductivities of both in terms of structure and bonding.

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