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Label the hydrophilic and hydrophobic parts in the following compounds.
(i) \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{10} \mathrm{CH}_2 \mathrm{OSO}_3{ }^{-} \mathrm{Na}^{+}\)
(ii) \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{15}-\mathrm{N}^{+}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}\)
(iii) \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{16} \mathrm{COO}\left(\mathrm{CH}_2 \mathrm{CH}_2 \mathrm{O}\right)_n \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{OH}\)
(i) \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{10} \mathrm{CH}_2 \mathrm{OSO}_3{ }^{-} \mathrm{Na}^{+}\)
(ii) \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{15}-\mathrm{N}^{+}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}\)
(iii) \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{16} \mathrm{COO}\left(\mathrm{CH}_2 \mathrm{CH}_2 \mathrm{O}\right)_n \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{OH}\)
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Verified Answer
(i) \(\underbrace{\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{10} \mathrm{CH}_2}_{\text {Hydrophobicpart }}-\underbrace{\mathrm{OSO}_3^{-} \mathrm{Na}^{+}}_{\text {Hydrophilic part }}\)
(ii) \(\underbrace{\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{15}}_{\begin{array}{c}\text { Hydrophobic } \\ \text { part }\end{array}}-\underbrace{\stackrel{+}{\mathrm{N}}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}}_{\begin{array}{c}\text { Hydrophilic } \\ \text { part }\end{array}}\)
(ii) \(\underbrace{\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{15}}_{\begin{array}{c}\text { Hydrophobic } \\ \text { part }\end{array}}-\underbrace{\stackrel{+}{\mathrm{N}}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}}_{\begin{array}{c}\text { Hydrophilic } \\ \text { part }\end{array}}\)
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