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Calculate the pH of each of the following solutions ( Ka and Kb values are given in Appendix D in the textbook). 0.115 M hydrogen chromate ion (HCrO4^-) . Ka= 3 x 10^-7 pH? 0.119 M pyridine (C5H5N) , Kb= 1.7 x 10^-9 pH? Help me please, iam stuck on these problems.

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