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３９．A buffer solution is 1.20 M in NH3 and 1.00 M in NH4Cl. If 0.190 moles...

３９．A buffer solution is 1.20 M in NH3 and 1.00 M in NH4Cl. If 0.190 moles of NaOH are added to 1.00 L of the buffer, what is its pH? Assume the volume remains constant. Kb of NH3 = 1.8 ✕ 10-5.

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