An analytical chemist is titrating 63.4 mL of a 0.3700 M solution of nitrous acid (HNO,) with a 1.200 M solution of NaOH. The p K of nitrous acid is 3.35. Calculate the pH of the acid solution after the chemist has added 22.3 mL of the NaOH solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of NaOH solution added. Round your answer to 2 decimal places.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.