Pick out the correct statement?

A. A process is irreversible as long as ? S for the system is greater than zero

B. The mechanical work done by a system is always equal to?P.dV

C. mation of the compound from its reactants</strong>

D. If an insoluble gas is passed through a volatile liquid placed in a perfectly insulated container,

E. temperature of the liquid will increase

F. The heat of formation of a compound is defined as the heat of reaction leading to the

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