The freezing point (in °C) of a solution containing 0.1 g of K3[Fe(CN)6] (Mol. Wt. 329) in 100 g water (Kf = 1.86 K kg mol–1) is
–2.3 × 10–2
–5.7 × 10–2
–5.7 × 10–3
–1.2 × 10–2
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