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A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.

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Electrolysis

Process that occurs in electrolytic cells.

Basic Salt

A salt containing an ionizable OH group.

Crystal Lattice Energy

Amount of energy that holds a crystal together, the energy change when a mole of solid is formed from its constituent molecules or ions (for ionic compounds) in their gaseous state.

Second Law of Thermodynamics

The universe tends toward a state of greater diorder in spontaneous processes.

Hydrogenation

The reaction in which hydrogen adds across a double or triple bond.

Hess' Law of Heat Summation

The enthalpy change for a reaction is the same whether it occurs in one step or a series of steps.

Extensive Property

A property that depends upon the amount of material in a sample.

Dynamic Equilibrium

An equilibrium in which processes occur continuously, with no net change. When two (or more) processes occur at the same rate so that no net change occurs.

Beta Particle

Electron emitted from the nucleus when a neuton decays to a proton and an electron.

Semiconductor

A substance that does not conduct electricity at low temperatures but does so at higher temperatures.