What Is the Concentration of Ammonium Ion, [NH₄⁺], Present at Equilibrium

question 87

Multiple Choice

What is the concentration of ammonium ion, [NH₄⁺], present at equilibrium if 0.100 moles of NaOH are added to 0.200 moles of NH₃ to form one-liter of solution?

• A) [NH₄⁺] = 9.0×10 ^{- 6} M
• B) [NH₄⁺] = 3.6×10 ^{- 5} M
• C) [NH₄⁺] = 1.9×10 ^{- 3} M
• D) [NH₄⁺] = 6.0×10 ^{- 3} M
• E) [NH₄⁺] = 0.10 M