Answer :
acidity of lactic acid = pKa = 3.85
Ca = 0.13M
Cs = 0.11M
Henderson-Hasselbalch equation:
pH = pKa + log(Cs/Ca)
pH = 3.85 + log(0.11M/0.13M) = 3.85 + log0,846 = 3.85 - 0.073 = 3.777
Ca = 0.13M
Cs = 0.11M
Henderson-Hasselbalch equation:
pH = pKa + log(Cs/Ca)
pH = 3.85 + log(0.11M/0.13M) = 3.85 + log0,846 = 3.85 - 0.073 = 3.777
The pH value of the buffer is mathematically given as
pH= 3.77
What is the pH value of the buffer?
Question Parameters:
The pH of a buffer that is 0.13 M in lactic acid and 0.11 M in sodium lactate
Generally, the equation for the pH Value is mathematically given as
pH = pKa + log(Cs/Ca)
Where
Ca = 0.13M
Cs = 0.11M
Therefore
pH = 3.85 + log(0.11M/0.13M)
pH= 3.85 + log0,846
pH= 3.85 - 0.073
pH= 3.77
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