Question
a.
Minimum number of degree of freedom of a system is zero.
b.
Degree of freedom of a system containing a gaseous mixture of helium, carbon dioxide and hydrogen is 4.
c.
For a two phase system in equilibrium made up of four non-reacting chemical species, the number of degrees of freedom is 4.
d.
Enthalpy and internal energy change is zero during phase change processes like melting, vaporisation and sublimation.
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