Acid rain is created when acidic substances, such as sulfur dioxide, are released into and mix with the atmosphere.
Acids have a pH of
less than 7
more than 7
4 or less
no more than 1
Distilled water has a pH of 7. Therefore, on the pH scale, water is
strongly basic.
mildly acidic.
neutral.
alkaline.
A _____________ resists changes in pH. It is composed of an acid-base pair, and can be used to "protect" other substances from changes in pH.
conjugate formula
buffer solution
basic indicator
(none of the above)
__________ is the process used to determine buffering capacity (how much of an acid or base has to be added before buffers are no longer effective).
Titration
Burette
Buffer testing
Indication
Buffers work because they dissociate so completely in water, they acidify the substance, offsetting the addition of any bases.
To create a buffer in an acidic substance, you should add a conjugate base. This forms an acid-base pair.
