A monoprotic weak acid (HA) has a p?a value of 3.004. Calculate the fraction of HA...

Question

Question

A monoprotic weak acid (HA) has a p?a value of 3.004. Calculate the fraction of HA in each of its forms ( HA, A− ) at pH 4.159 .

?HA=

?A−=

What is the quotient [A−][HA] at pH 4.159 ?

[A−]/[HA]=

Answer 1

Answer #1

from Handerson Hasselbalch equation we have pH = pkat log PH = pkat log [salt] [Acid] & For HA HATA [salt] is [A-] and pH = p

Answer 2

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