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A substance that produces OH (aq) ions in aqueous solution. Strong soluable bases are soluble in water and are completely dissociated. Weak bases ionize only slightly.

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Isoelectric

Having the same electronic configurations.

Oxidation Numbers

Arbitrary numbers that can be used as mechanical aids in writing formulas and balancing equations, for single- atom ions they correspond to the charge on the ion, more electronegative atoms are assigned negative oxidation numbers (also called Oxidation states).

Hydration Energy

The energy change accompanying the hydration of a mole of gase and ions.

Voltage

Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.

Eluant or eluent

The solvent used in the process of elution, as in liquid chromatography.

 

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Hydrogen-Oxygen Fuel Cell

Fuel cell in which hydrogen is the fuel (reducing agent) and oxygen is the oxidizing agent.

 

Calorie

The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.

Extrapolate

To estimate the value of a result outside the range of a series of known values. Technique used in standard additions calibration procedure.

Distillate

The material in a distillation apparatus that is collected in the receiver.