The Freezing Point of an Aqueous 0

question 30

Multiple Choice

The freezing point of an aqueous 0.050 m solution of a platinum(IV) complex having the molecular formula Pt(NH₃) ₃Cl₄ is -0.19°C.Which of the following equations best represents what happens when Pt(NH₃) ₃Cl₄ dissociates in water? (K_f for water is 1.86°C/m.)

• A)Pt(NH₃)₃Cl₄(s)→ [Pt(NH₃)₃Cl₂]²⁺(aq)+ 2Cl^-(aq)
• B)Pt(NH₃)₃Cl₄(s)→ [Pt(NH₃)₃Cl₃]⁺(aq)+ Cl^-(aq)
• C)Pt(NH₃)₃Cl₄(s)→ [Pt(NH₃)₃Cl]³⁺(aq)+ 3Cl^-(aq)
• D)Pt(NH₃)₃Cl₄(s)→ [Pt(NH₃)₂Cl₂]²⁺(aq)+ 2Cl^-(aq)+ NH₃(aq)
• E)Pt(NH₃)₃Cl₄(s)→ Pt⁴⁺(aq)+ 4Cl^-(aq)+ 3NH₃(aq)

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