Short Answer TypeHow will you distinguish between intensive and extensive properties?
(i) Intensive properties: These are the properties which depend on only upon the nature of the substance and are independent of the amount of the substance present is the system. The common examples of these properties are temperature, pressure, refractive index, viscosity, density, surface tension, specific heat, freezing point, boiling point etc.
(ii) Extensive properties: These are the properties which depend on upon the quantity of the matter contained in the system. The common examples of these properties are mass, volume, heat capacity, internal energy, enthalpy, entropy, Gibb’s free energy etc.
Long Answer TypeShort Answer TypeCalculate the maximum work obtained when 0.75 mol of an ideal gas expands isothermally and reversibly at 27°C from a volume of 15L to 25L.
If water vapour is assumed to be a perfect gas,
molar enthalpy change for vapourisation of 1 mol of water at 1bar and 100°C is 41kJ mol–1. Calculate the internal energy change, when
(i) 1 mol of water is vaporised at 1 bar pressure and 100°C.
Long Answer TypeDerive mathematical form of First law of Thermodynamics.
Or
Derive the relationship between heat, internal energy and work.
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