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Organic chemistry — Question 4

QCAA 2021, Paper 1 · 1 mark

Q4 · 2021 · Paper 1Unclassified1 mark

QUESTION 4

The cleaning action of soap is impaired in hard water because the

(A) hydrophilic end reacts with calcium ions to form insoluble salts.

(B) hydrophobic end reacts with calcium ions to form insoluble salts.

(C) hydrophilic end reacts with calcium ions to form insoluble fatty acids.

(D) hydrophobic end reacts with calcium ions to form insoluble fatty acids.

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