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A.) To find the pKa of X-281, you prepare a 0.085 M test solution of X-281...

A.) To find the pKa of X-281, you prepare a 0.085 M test solution of X-281 at 25.0 ∘C. The pH of the solution is determined to be 2.40. What is the pKa of X-281?

B.)Ammonia, NH3, is a weak base with a Kb value of 1.8×10−5.

What is the pH of a 0.190 M ammonia solution?

What is the percent ionization of ammonia at this concentration?

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