Blognya Nack Camba: Pengertian Sifat koligatif larutan

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Pengertian Sifat koligatif larutan

Diposting oleh Fachruddin idris

Dari Wikibooks Indonesia, sumber buku teks bebas berbahasa Indonesia

Penurunan tekanan uap jenuh

$P_{lar} = P_{0} \times X_p$

dengan $X_p = \frac {n_p} {n_t + n_p}$
atau

$\Delta P = P_0 \times X_t$

dengan $X_t = \frac {n_t} {n_t + n_p}$
Keterangan:

P_lar : Tekanan uap jenuh (atm)
$\Delta P$ : Penurunan tekanan uap jenuh (atm)
P₀: Tekanan uap air (atm)
n_t: jumlah mol zat terlarut
n_p: jumlah mol zat pelarut

Kenaikan titik didih

$\Delta T_b = m \times k_b$

dengan $m = \frac {n_t} {m_p}$
Keterangan:

$\Delta T_b$ : Besarnya penurunan titik didih (°C)
n_t: jumlah mol zat terlarut
m_p: massa pelarut (kg)

Penurunan titik beku

$\Delta T_f = m \times k_f$

dengan $m = \frac {n_t} {m_p}$
Keterangan:

$\Delta T_f$ : Besarnya penurunan titik beku (°C)
n_t: jumlah mol zat terlarut
m_p: massa pelarut (kg)

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