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chemistry

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The poison strychnine is a weakly basic compound with Kb = 1.8 „e 10ƒ{6. What is the pH of a 0.058 M solution of strychnine?
a. 3.49
b. 7.30
c. 8.26
d. 10.51
e. 12.76

  • chemistry - ,

    If we call strychnine, B, then
    B + HOH ==> BH^+ + OH^-

    Kb = (BH^+)(OH^-)/(B)
    Set up an ICE chart, substitute, and solve for OH^-, convert to pOH, then to pH.

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