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A substance whose aqueous solutions conduct electricity.

 

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Heat of Solution

The amount of heat absorbed in the formation of solution that contains one mole of solute, the value is positive if heat is absorbed (endothermic) and negative if heat is released (exothermic).

Acid Anhydride

Compound produced by dehydration of a carbonic acid. General formula is R--C--O--C--R. Chemical compound that reacts with water to form an acid and are usually oxides of nonmetallic elements.

Standard Electrodes

Half-cells in which the oxidized and reduced forms of a species are present at unit activity, 1.0M solutions of dissolved ions, 1.0atm partial pressure of gases, and pure solids and liquids.

Stoichiometry

Description of the quantitative relationships among elements and compounds as they undergo chemical changes.

Heat of Condensation

The amount of heat that must be removed from one gram of a vapor at it's condensation point to condense the vapour with no change in temperature.

Half-Reaction

Either the oxidation part or the reduction part of a redox reaction.

Endothermicity

The absorption of heat by a system as the process occurs.

Element

A substance that cannot be decomposed into simpler substances by chemical means.

Shielding Effect

Electrons in filled sets of s , p orbitals between the nucleus and outer shell electrons shield the outer shell electrons somewhat from the effect of protons in the nucleus, also called screening effect.

Solute

The dispersed (dissolved) phase of a solution.