To find the pH of a solution of NH4Br directly, one would need to use: Select...

Question

Question

To find the pH of a solution of NH4Br directly, one would need to use:

Select the correct answer below:

the Kb of NH3 to find the hydroxide concentration

the Ka of NH+4 to find the hydronium concentration

the Kb of NH3 to find the hydronium concentration

the Ka of NH+4 to find the hydroxide concentration

Answer 1

Answer #1

NH₄⁺ + H₂O <==> H₃O⁺ + NH₃

NH₃ is a weak base, so we need Kb and concentration of H₃O⁺( hydronium ion), Ka can be then calculated as Ka = Kw/Kb

Answer: the Ka of NH₄⁺ to find the hydronium concentration

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Answer 2

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