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Al₂(SO₄)₃
Mr = (27 x 2) + (32 x 3) + (12 x 16)
= 342
gr = 34,2 g
p = 1000 g
Kf = 1,86 °C/m

i = 1 + α(n - 1)
i = 1 + (5 - 1)
i = 5

Tf = _
ΔTf = m • Kf • i
= gr/Mr • 1000/p • Kf • i
= 34,2/342 • 1000/1000 • 1,86 • 5
= 0,93 °C

Tf = 0 - 0,93
Tf = -0,93 °C