alleryFor 0.5 m solutions of NaCl, KCl, and BaCl2, which gives largest ΔT_f?
ANaCl (i=2)
BKCl (i=2)
CAll equal
DBaCl2 (i=3)
Answer & Solution
Correct answer: D. BaCl2 (i=3)
ΔT_f ∝ i × m.
BaCl2 has highest i = 3, so largest ΔT_f.
ΔT_f = 1.86 × 3 × 0.5 = 2.79 K for BaCl2; 1.86 K for NaCl/KCl.
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