What concentration of this base will produce a ph

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Question- A certain weak base has a Kb of 7.70 x 10 ^-7. What concentration of this base will produce a pH of 10.22

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What concentration of this base will produce a ph : A certain weak base has a Kb of 7.70 x 10 ^-7. What concentration of this base will produce a pH of 10.22
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