How Many Mmoles of HCl Must Be Added to 130

question 68

Multiple Choice

How many mmoles of HCl must be added to 130.0 mL of a 0.40 M solution of methylamine (pK_b = 3.36) to give a buffer having a pH of 11.59?

• A) 16 mmol
• B) 0.11 mmol
• C) 5.2 mmol
• D) 2.5 mmol
• E) 0.91 mmol

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