Page 22 - E-LKPD Sistem Koloid Etnosains_Neat

E-LKPD Sistem Koloid Berpendekatan Etnosains

b. Bagaimana proses terjadinya dialisis?

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3. Elektroforesis
a. Jelaskan apa yang dimaksud dengan elektroforesis!

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b. Bagaimana cara menentukan muatan koloid melalui proses

elektroforesis?
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c. Contoh elektroforesis

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4. Adsorpsi

a. Jelaskan apa yang dimaksud dengan adsorpsi!
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b. Muatan koloid terjadi karena adsorpsi ion-ion tertentu. Sol
Fe(OH)3 menghasilkan ion ..... sehingga bermuatan .....,

sedangkan sol As2S3 mengadsorpsi ion ..... sehingga bermuatan

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c. Penjernihan air menggunakan tawas merupakan salah satu

contoh peristiwa adsorpsi, bagaimana proses terjadinya

adsorpsi tersebut? Jelaskan!
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d. Contoh adsorpsi dalam kehidupan sehari-hari

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15 | K e l a s X I S M A / M A