Aqueous solutions of various strong and weak electrolytes are carefully prepared. Which of the follo — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

A functioning buffer strictly requires a conjugate weak acid-base pair. Option A directly mixes a weak acid and its salt, creating an acidic buffer. Option B mixes a weak acid salt with a limiting amount of strong acid, neutralizing some salt to produce weak acid while leaving unreacted salt, perfectly creating a buffer. Option C directly mixes a weak base and its salt, forming a basic buffer. Option D mixes a weak base with a strong base, which utterly fails to form a buffer system (it's simply a strongly basic mixture).