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48% KOH freezing pt -11deg C

45% KOH freezing point -28 deg C

The change in freezing point (always a decrease) = (number of ions in solution per molecule) x (Kf - the freezing point constant of the solvent) x (m - the molality of the solution, i. e. moles solute per kg solvent)

For KOH in water,

Freezing pt = 0 - 2(1.86)(molality of solution)

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14y ago

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