Question

Answer only if you know with complete solution

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Answer 1

hola!

Δ$T_{f}$ = i × $K_{f}$ × m

⇒ 0.45 = i × 5.12 × $\frac{0.2}{60}$ × $\frac{1000}{20}$

i = 0.527

2AcOH ⇄ (AcOH)₂

i = 1 - $\frac{ \alpha }{2}$

0.527 = 1 - $\frac{ \alpha }{2}$

$\alpha$ = 0.946 or 94.6%

Hence,
Option (1) is Correct!

hope it helps!