Given, pH = 10. pH + pOH = 14. So, pOH = 14 – 10 = 4. pOH 4 pOH = log OH OH 10 10 >> Also given 9 sp K 10 . Now, for the reaction, 2 2 Ba OH Ba 2OH -> . Here, 2 2+ sp 2 9 2 4 2 1 K = Ba OH 10 Ba 10 Ba 10 >> >>
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