Chemical Thermodynamics

Extensive and Intensive Properties and State Functions

Thermodynamic properties (macroscopic system)
→ Intensive property
→ Extensive property

Intensive property :
Intensive property does not depend on nature, mass of the substance.
ex : P, T, Density, Viscosity, surface tension, refractive index, dipole moment, dielectric constant, concentration, pH, boiling point, molar volume.

Extensive property :
Extensive property depends on the mass of the substance on division substance values of their properties change.
Ex : Mass, volume, internal energy (V), Enthalpy (H), Entropy (S), Gibbs energy.

Heat : The energy transferred from system to surroundings on account of the temperature difference.
q = msΔT (s = specific heat
                m = mass of the substance
                ΔT = change in T)

Energy absorbed by the system is +ve
Energy liberated by the system is −ve.

View the Topic in this Video from 25:00 to 39:58

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