An electrolyte `AB` is `50%` ionised in aqueous solution. Calculate the freezing point of `1` molal aqueous solution.

Explanation

To solve the problem of calculating the freezing point of a 1 molal aqueous solution of the electrolyte AB, which is 50% ionized, we will follow these steps:

### Step 1: Understand the Dissociation of the Electrolyte
The electrolyte AB dissociates into two ions:
\[ AB \rightarrow A^+ + B^- \]
Since it is 50% ionized, this means that for every mole of AB, 0.5 moles will dissociate into 1 mole of A^+ and 1 mole of B^-.

### Step 2: Calculate the Van 't Hoff Factor (i)
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