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Pada kasus ini, molalitas larutan adalah sama
ΔTf = m . Kf
⇒ m = ΔTf/Kf
ΔTb = m . Kb
⇒ m = ΔTb/kb
Sehingga :
m₁ = m₂
ΔTf/Kf = ΔTb/Kb
3,72/2,86 = ΔTb/0,52
2 = ΔTb/0,52
ΔTb = 2 . 0,52
ΔTb = 1,04
Tb = ΔTb + Tb°
Tb = 1,04 + 100
Tb = 101,04°C
Jadi, larutan A akan mendidih pada suhu 101,04°C (Jawaban E)