Weak Organic Bases
weak organic bases
Chem question I cannot figure out. Please help?
If the pH of a 7.0*10^-4 M solution of morphine is 9.5, what is the value of Kb?
morphine=C17H19NO3.. It’s a weak organic base
TIFAAAAANYYYYYYY HIII
C17H19NO3 <-----> C17H20NO3+ + OH-
It’s a weak base use the HasselBach equation
POH=PkB+log[CONJ ACID/BASE]
conj acid/base=1 ( ratio 1:1 )
poh=pkb+0
poh=pkb=-log[kb]
ph=14-poh
9.5=14-poh
poh=4.5=pkb
10^-pkb=kb = 10^-4.5=3.16*10^-5
Chemistry: Acids and Bases (pH Calculation)
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