An Aqueous Mixture of Phenol and Ammonia Has Initial Concentrations

question 20

Multiple Choice

An aqueous mixture of phenol and ammonia has initial concentrations of 0.200 M C₆H₅OH(aq) and 0.120 M NH₃(aq) .At equilibrium,the C₆H₅O^-(aq) concentration is 0.050 M.Calculate K for the reaction.
C₆H₅OH(aq) + NH₃(aq) C₆H₅O^- + NH₄⁺(aq)

• A) 0.10
• B) 0.24
• C) 2.1
• D) 4.2
• E) 4.8

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