Which statement is true at the half-neutralization point of the titration of a weak acid with...

Question

Question

Answer 1

Answer #1

At half equivalence point, half of acid HA has reacted.

So, there is equal concentration of A- and HA

So,

[A-]/[HA] = 1

Use:

pH = pKa + log [A-]/[HA]

pH = pKa + log (1)

pH = pKa + 0

pH = pKa

Answer: b

Answer 2

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