Asked in Premeth Test 23 — Chemical Kinetics and Chemical Equilibrium (25 March 2025) 2025Moderate

Which Henderson equation is not correct?

Correct answer: C. pH = pKa - log [salt]/[acid].

  • A. pH = pKa + log [salt]/[acid].
  • B. pH = pKa-log [acid]/[salt].
  • C. pH = pKa - log [salt]/[acid].
  • D. Pka =pH-log[salt]/[acid].

Explanation

The only incorrect form is:pH=pKa−log⁡[salt]/[acid]

Last updated

About Buffer Solutions

Buffer solutions resist changes in pH when small amounts of acid or base are added, using a weak acid and its conjugate base or a weak base and its conjugate acid. Work includes buffer action, the common-ion effect, Henderson-Hasselbalch calculations, buffer capacity, and the difference between acidic and basic buffers.

Practise Chemical Equilibrium

625 free Chemical Equilibrium MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Chemistry questions like this

Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions