4/26/10

Ch. 14 contd.

-Any species that can react as either an acid or base is described as amphoteric. A good exmple of this is water

-Water can act as a base
-Water can also act as an acid

-The covalently bonded OH group in an acid is referred to as a hydroxyl group.
-Molecular compounds containing OH groups can be acidic or amphoteric.
-The behavior of oxygen atoms bonded to the atom connected to the OH group.

-In aqueas solutions, neutralization is the reaction of hydronium ions and OH ions to form water molecules.

-A salt is an ionic compound composed of a cation from a base and an anion from an acid.

-NO, NO2, CO2, SO2, and SO3 gasses from industrial processes can dissolve in atmospheric water to produce acidic solutions.

-Very acidic rain is known as acid rain. Acid rain is not as rare as people might think. It is actually fairly common but it is normally not found in large concentrations

END OF CH 14. (Followed by DR. B's famous smile that we have grown to hate when ch's end...)

Ch. 15

-In the self-ionization of water, two water molecules produce a hydronium ion and a hydroxide ion by transfer of a proton.

-Solutions in which H3O=OH, its a neutral solution
-Solutions in which H3O>OH, its acidic
-Solutions in which H3O
-Strong acids and bases are considered completely ionized or dissociated in weak aquous solutions.

-The pH of a solution is defined as the negative of the common logorithm of the Hydrogen ion concentration.



There is a link on the HW website with the pre-lab Q's that are due tomorrow and Dr. B has asked us to bring in our Lab Books to class tomorrow. Have a good night.


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