A 75.0 mL sample of 0.05 M HCN (pKa = 9.21) is titrated with 0.5 M NAOH. What is [H3O*] in the solution after 3.0 mL of 0.5 M NaOH has been added? O 4.1 x 10-10 M O 1.5 x 10-9 M O 5.2 x 10-13 M O 1.0 x 10-7 M O 9.2 x 10-10 M

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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.