2. properties of bases
a. bases have a ph value greater
b. bases feel .
c. bases are good cleaners and will react with
d. litmus turns in the presence of a basic solution.
e. phenolphthalein turns in the presence of a basic solution

3. definitions of acids and bases
a. the formula for an acid will always contain:

b. the formula for a base will usually contain:

c. what is the formula for the base, barium hydroxide? which ions are produced when barium hydroxide dissociates in water?

d. what is the formula for phosphoric acid? which ions are produced when phosphoric acid dissociates in water?

e. which part of hydrochloric acid, hcl, is the acidic part?

f. which part of sodium hydroxide, naoh, is the basic part?

g. write a balanced equation for the neutralization reaction that occurs when potassium hydroxide and hydrobromic acid are mixed. include state symbols.

ph and poh

ph is an indication of how acidic or basic a solution is.
ph = -log[h+].
a logarithm (log) is just the exponent to which ten (10x) is raised to obtain a given value.
for example if [h+] = 1.0x10-5, then the log of 1.0x10-5 = -5 and the ph would be 5.
it is easier to find the poh for a base and then to convert to ph. the following formulas will .
poh = -log[oh-].
ph + poh = 14
[h+][oh-] = 10-14