# Freezing point depression 2

Chemistry Level pending

An aqueous solution is $$0.4201$$ molal in Na$$_{2}$$SO$$_{4}$$. It has a freezing point of $$-2.109$$ °C. Determine the effective number of particles that arise from each Na$$_{2}$$SO$$_{4}$$.

Use the freezing point depression constant of water $$K_f =1.86$$ K kg mol$$^{-1}.$$

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