Which is a net ionic equation for the neutralization reaction of a weak acid wit

Question

Which is a net ionic equation for the neutralization reaction of a weak acid with a weak base? Which is a net ionic equation for the neutralization reaction of a weak acid with a weak base?

H3O+(aq) + OH-(aq) 2 H2O(l)

H3O+(aq) + NH3(aq) NH4+(aq) + H2O(l)

HF(aq) + OH-(aq) H2O(l) + F-(aq)

HF(aq) + NH3(aq) NH4+(aq) + F-(aq)

Which statement about buffers is true?

Which statement about buffers is true?

Buffers consist of a strong acid and its conjugate base.

What is the Henderson-Hasselbalch equation for the acidic buffer HA/A-?

What is the Henderson-Hasselbalch equation for the acidic buffer HA/A-?

Buffers have a pH = 7. A buffer does not change pH on addition of a strong acid or strong base. Buffers resist change in pH upon addition of small amounts of strong acid or strong base.

Buffers consist of a strong acid and its conjugate base.

What is the Henderson-Hasselbalch equation for the acidic buffer HA/A-?

What is the Henderson-Hasselbalch equation for the acidic buffer HA/A-?

pH = -log[H3O+] pH = pKa - log{[A-]/[HA]} pH = pKa + log{[A-]/[HA]} pH = 14 - pOH

Explanation / Answer

option (c)

pK = pH+log{[HA]/[A-]}

pH = pK - log{[HA]/[A-]}

logarthmic rearrangement gives,

pH = pK + log {[A-]/[HA]}

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