Quinine occurs naturally in the bark of the cinchona tree. For centuries it was the only...

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Quinine occurs naturally in the bark of the cinchona tree. For centuries it was the only...

Quinine occurs naturally in the bark of the cinchona tree. For centuries it was the only treatment for malaria. Quinine contains two weakly basic nitrogen atoms, with Kb1 = 3.3×10-6 and Kb2 = 1.4×10-9 at 25°C. Calculate the pH of a 0.0131 M solution of quinine in water.

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