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For 0.250 M of weak acid (NaHS) the Kb is given by 1.22 x10-13 , calculate the pH of the weak base.

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The pH of NaHS is determined by the hydrolysis of the salt.
HS^- + HOH ==> H2S + OH^-
Set up an ICE chart
Kb = (H2S)(OH^-)/(HS^-)
Solve for (OH^-) and convert to PH. Post your work if you get stuck.
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