RENEWED GEN CHEM WEEK 1 DAY 2
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18 Terms
an acid
a substance that produces hydrogen ions, H+ (aq), when it is added to WATER
(Arrhenius Definitions)
a base
is a substance that produces hydroxide ions, OH- (aq), when it is added to water.
(Arrhenius Definitions)
HCl (aq) → H+ (aq) + Cl– (aq)
is an example of
an acid
NaOH (s) → Na+ (aq) + OH– (aq)
is an example of
a base
More oxygen atoms means
more acidic
The smaller the Ka value
the weaker the acid
The larger the Ka value
the stronger the acid
The more oxygen atoms the more
acidic
acid strength increases
down the group
Stronger acid
→ weaker conjugate base.
So for compounds that are similar and have similar oxygen #’s look @
electronegativity
more electronegative
= more acidic
Least electronegative
= more basic
Buffer Solution Formula
pH = pKa + log([BASE]/[ACID])
To find pKa
pKa = -log(Ka)