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

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Chemistry

Quinine occurs naturally in the bark of the cinchona tree. Forcenturies, it was the only treatment for malaria. Quinine containstwo weakly basic nitrogen atoms, with Kb1=3.31 x 10^-6 andKb2=.00000000135 at 25 C. Calculate the pH of a .011 M solution ofquinine in water.

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3.7 Ratings (421 Votes)
Study the ionic equation representing its ionization in water of 0011M quinine solution in following two steps Step1 quinine water quinineH OH Initially 0011 excess 0 0 At equilibria 0011 x x x where x represents the deegree of ionization therefore Kb1 331 x 106 x2 0011 x x2 331 x 106 0011 x Let the value of x on solving the above equation be    See Answer
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