Given the PK_a for Ammonium Ion Is 9

question 9

Multiple Choice

Given the pK_a for ammonium ion is 9.26, what is the pH of 1 L of
Solution which contains 5.35 g of NH₄Cl, and contains the ammonium ion at a concentration of 0.2 mol L^-1? (Molar mass of NH₄Cl = 54.5 g mol^-1.)

• A) 7.00
• B) 7.65
• C) 8.96
• D) 9.56
• E) 9.95

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