Consider a solution initially containing 0.30 M of CH3NH2 mixed with 0.50 M of CH3NH3Cl in water. What is the pH after the addition of 6.415 mL of 0.10 M NaOH to 19.41 mL of this solution? (Kb for CH3NH2 = 4.47 × 10–4) Express your answer using at least three significant figures. Do not use scientific notation.

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