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Give an example of an anionic surfactant...

Give an example of an anionic surfactant and a cationic surfactant.

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Anionic surfactant: sodium stearate `(C_(17)H_(35)COONa)`. Cationic surfactant: cetyltrimethylammonium chloride `[C_(16)H_(33)(CH_(3))_(3)N^(+)Cl^(-)]`.
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