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NEETChemistryIonic Equilibrium

How does the pH of a solution change when a base is added, and how do buffer solutions counteract this change?

Options

  1. AThe pH decreases, and buffer solutions increase the concentration of OH- ions.
  2. BThe pH increases, and buffer solutions decrease the concentration of H+ ions.
  3. CThe pH increases, and buffer solutions increase the concentration of H+ ions.
  4. DThe pH decreases, and buffer solutions decrease the concentration of OH- ions.

Correct answer

B. The pH increases, and buffer solutions decrease the concentration of H+ ions.

Step-by-step solution

When a base is added, the pH of the solution typically increases due to the introduction of OH- ions. Buffer solutions counteract this change by decreasing the concentration of H+ ions, which results in an increase in pH.

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