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CA3COOH, clear, colorless liquid, pungent odor. Boiling point 140C, flash point 54C (closed cup), autoignition temperature 38OC.

A 99.7% solution is used in the S.S.E. laboratory for junction depth measurements. Acetic acid is also present in the metal etch solution used for Aluminum etch procedure.

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Excited State

Any state other than the ground state of an atom or molecule.

Heat Capacity

The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.

Native State

Refers to the occurrence of an element in an uncombined or free state in nature.

 

Optical Isomers

Stereoisomers that differ only by being nonsuperimposable mirror images of each other, like right and left hands, also called enantiomers.

Endothermic

Describes processes that absorb heat energy.

Transition State Theory

Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.

Specific Rate Constant

An experimentally determined (proportionality) constant, which is different for different reactions and which changes only with temperature, k in the rate-law expression: Rate = k [A] x [B]v.

Vapor

A gas formed by boiling or evaporating a liquid.

Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

Contact Process

Industrial process by which sulfur trioxide and sulfuric acid are produced from sulfur dioxide.