Assuming complete ionization for the electrolytes, which of the following aqueous solutions will exh — Solutions and Colligative Properties Chemistry Question
Question
Assuming complete $100\%$ ionization for the electrolytes, which of the following $0.10\text{ m}$ aqueous solutions will exhibit the absolute lowest freezing point?
Answer: C
💡 Solution & Explanation
The lowest freezing point belongs to the solution with the highest effective particle concentration ($i \times m$). Glucose $i=1$, $KCl$ $i=2$, $K_2SO_4$ $i=3$, $Al_2(SO_4)_3$ $i=5$. Since $5 \times 0.10$ is the highest, it creates the largest depression ($\Delta T_f$), pushing the freezing point the lowest.
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