The change in the freezing point of the solution is 1.1°C.
What is freezing point depression?
The freezing point depression is a colligative property thus we must take note of the number of particles in solution.
Using;
ΔT = k m i
k = 1.86 °C/m
m = 0.195 m
i = 3
ΔT = 1.86 °C/m * 0.195 m * 3
ΔT = 1.1°C
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