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14.6 Exercise 6

Avg difficulty 2.5

What is [OH−] in a solution of 0.125 M CH3NH2 and 0.130 M CH3NH3Cl?
CH3NH2(aq)+H2O(l)⇌CH3NH3+(aq)+OH−(aq)Kb=4.4×10−4\text{CH}_{3} \text{NH}_{2} \left(a q\right) + \text{H}_{2} \text{O} \left(l\right) \rightleftharpoons \text{CH}_{3} \text{NH}_{3} ^{+} \left(a q\right) + \text{OH}^{−} \left(a q\right) K_{\text{b}} = 4.4 \times 10^{−4}

OpenStax Chemistry 2e, 14.6 Buffers, exercise 6

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Adapted from General Chemistry © 2019 Rice University. Licensed under CC BY 4.0. Sources: Chemistry 2e, Chemistry: Atoms First 2e. Imported at revision 32c7196.