Q.

Which part of the stearate ion is hydrophilic in nature? 

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a

Tail

b

Hydrocarbon chain 

c

Head

d

Middle

answer is C.

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Detailed Solution

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A stearate ion is a long-chain fatty acid anion (C17H35COO- ).

The end of the hydrocarbon chain is having a polar group (head)(-COO-) which is hydrophilic and represented by a hollow circle. Tail or Hydrocarbon chains( -C17H35) are hydrophobic.

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