Part 11
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a lewis base is a ___.
a lewis base is an electron donor
a lewis base is a ___.
a lewis base is an electron donor
pH of 7 is ___.
neutral
pH of 7 is ___.
neutral
pH above 7 is ___.
basic
pH above 7 is ___.
basic
pH below 7 is ____.
acidic
pH below 7 is ____.
acidic
pH= -log [H+]
pH= -log [H+]
pOH= -log [OH-]
pOH= -log [OH-]
what is Kw?
the water dissociation constant kw= 1.0 x 10^-14
pH + pOH = ?
14
what is the relationship between Ka and Kb?
Ka & Kb are inversely related. if Ka is big, then Kb is small and visa-versa
what is hydrolysis?
the reverse of a neutralization reaction; salt ions react with water to give back the acid or base
the weaker the acid, the _____ the Ka.
weak acid = small Ka
the weaker the base, the ____ the Kb.
weak base = small Kb
what does a high Ksp correspond to?
high ksp= high soluble most soluble = highest ksp value
what does a low Ksp correspond to?
low ksp= low solubility
what is an amphoteric species?
a species that can either gain or lose a proton.
what is the most common example of an amphoteric species?
water. when it reacts with an acid, it acts like a base; when it reacts with a base, it acts like an acid.