5000 ML of 0

question 77

Multiple Choice

50.00 mL of 0.10 M HNO₂ (nitrous acid, K_a = 4.5 * 10^-4) is titrated with a 0.10 M KOH solution. After 25.00 mL of the KOH solution is added, the pH in the titration flask will be

• A) 2.17.
• B) 3.35.
• C) 2.41.
• D) 1.48.
• E) 7.00.

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