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The slowest step in a mechanism, the step that determines the overall rate of reaction.

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Weak Electrolyte

A substance that conducts electricity poorly in a dilute aqueous solution.

Saturated Hydrocarbons

Hydrocarbons that contain only single bonds. They are also called alkanes or paraffin hydrocarbons.

Oxide

A binary compound of oxygen.

Capillary

A tube having a very small inside diameter.

Activation Energy

Amount of energy that must be absorbed by reactants in their ground states to reach the transition state so that a reaction can occur. In other words, activation energy is the minimum energy required for a chemical reaction to occur.

Disproportionation Reactions

Redox reactions in which the oxidizing agent and the reducing agent are the same species.

xenon trioxide

A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.

Integrated Rate Equation

An equation giving the concentration of a reactant remaining after a specified time, has different mathematical form for different orders of reactants.

Nucleons

Particles comprising the nucleus, protons and neutrons.

D -Transition elements (metals)

B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.