A 0.001 molal solution of a complex [ MA 8 ] in water has the freezing point of − 0.005 4 ∘ C . Assuming 100% ionization of the complex salt and K f for H 2 O = 1.86 km − 1 , write the correct r

Question

A 0.001 molal solution of a complex [ MA 8 ​ ] in water has the freezing point of − 0.005 4 ∘ C . Assuming 100% ionization of the complex salt and K f ​ for H 2 ​ O = 1.86 km − 1 , write the correct representation for the complex

TestHub · Accepted Answer

Using Δ T f ​ = i K f ​ m : 0.0054 = i × 1.86 × 0.001 ⇒ i ≈ 2.9 ≈ 3 Since the complex salt is 100% ionized, it must produce 3 ions in solution. Among the given options, [MA₆]A₂ dissociates as [ M A 6 ​ ] 2 + + 2 A − , giving 3 ions. Therefore, the correct answer is (C) [MA₆]A₂.

Chemistry - Liquid Solution Question with Solution | TestHub

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