(A process or reaction that can be reversed by an infinitesimally small change in conditions. For example, ice and water coexist at 1 atm and 0°C; a very slight temperature increase causes the ice to melt; a tiny temperature decrease causes the water to freeze. Melting or freezing under these conditions can be considered reversible. Reversible processes are infinitesimally close to equilibrium. ) reversible process; reversible reaction. Compare with irreversible and irreversible process. thermo
A chemical reaction which can proceed first to the right and then to the left when the conditions change. To Top
A reversible process is one which would change direction with an infinitesimal change in external conditions. For a process to be reversible it must be frictionless and quasistatic so that no energy is dissipated and the system is always only infinitesimally removed from equilibrium. Because a reversible process passes through a series of quasi-equilibrium states it can be represented as a solid line on a plot of one state variable against another. More details here.