Thermal capacities of organic compounds : Defining thermal capacities

Defining thermal capacities
Thermal capacities of organic compounds

Authors : Louis SCHUFFENECKER, Jean-Noël JAUBERT

Review date: December 5, 2016 | Lire en français

Add to my library

1. Defining thermal capacities

When a closed system receives, at constant volume, a quantity of heat Q _V, its change in internal energy ΔU is equal to this quantity of heat :

ΔU = U (final) – U (initial) = Q _V^( 1 )

When a closed system receives, at constant pressure, a quantity of heat Q _P, its enthalpy variation ΔH is equal to this quantity of heat :

ΔH = H (final) – H (initial) = Q _P^( 2 )

The definition of thermal capacity is very general and concerns a system as a whole (provided its temperature is uniform).

The notations C_p and C _V are used for molar heat capacities, which is why the notations...

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource. Click here to request your free trial access!

Already subscribed? Log in!

Ongoing reading
Defining thermal capacities

(1) - BENSON (S.W.) - Thermochemical Kinetics. - Willey (New York) (1968).
(2) - YONEDA (Y.) - Bull. Chem. Soc. Japan 52, 1297 (1979).
(3) - REID (R.C.), PRAUSNITZ (J.M.), POLING (B.E.) - The properties of gases and liquids. - MacGraw-Hill, 4e éd. (1984).

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource. Click here to request your free trial access!

Already subscribed? Log in!

Article included in this offer

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources