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sifat koligatif elektrlit

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sifat koligatif elektrlit

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  1. SifatKoligatifLarutanElektrolit Dari teori ion Svante August Arrhenius dikemukakanbahwalarutan asam, basaataupungaramtermasuklarutanelektrolit. Larutanelektrolityaitularutanygdapatterionisasiatauteruraimenjadi ion – ion. Dan akibatperuraianitumakadapatmengakibatkanbertambahnyajumlahpartikel Untukmengoreksihukum agar sesuaiutklarutanelektrolit, Jacobus HenricusVan’t Hoff menerangkanbahwahukumRoultharusdikalikandengansuatufaktorsebesar ( 1 + ( n – 1 )  ) ataudiberilambangidandisebutfaktorVan’t Hoff “Attention” n = jumlah ion  = derajadionisasi BACK NEXT

  2. Hubungan harga i dengan persen ionisasi (derajat ionisasi) adalah sebagai berikut : i = 1 + (n – 1) α n = jumlah ion Misal : CaCl2(n = 3) : KCl(n = 2) : FeCl3 (n = 4) α = derajationisasi Untuk n = 2 (biner) n = 3 (terner) n = 4 (kuartener) n = 5 (pentaner) Untukα = 1 (elektrolitkuat) α = 0 (nonelektrolit) 0<α<1 (elektrolitlemah) BACK NEXT

  3. RumusSifatKoligatifLarutanElektrolit : Tb = m x Kb x i Tf = m x Kf x i π = MRT x i Ket : sama seperti rumus-rumus sebelumnya tadi, hanya saja tinggal dikali i BACK NEXT

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