DP Chemistry (last assessment 2024)

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Question 18M.3.sl.TZ1.a.i

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.sl.TZ1.a.i
Level sl Paper 3 Time zone TZ1
Command term Draw Question number a.i Adapted from N/A
a.i.
[Maximum mark: 1]
18M.3.sl.TZ1.a.i

Palmitic acid has a molar mass of 256.5 g mol−1.

Part of this molecule is hydrophilic (bonds readily to water) and part hydrophobic (does not bond readily to water). Draw a circle around all of the hydrophilic part of the molecule.

[1]

Markscheme

M18/4/CHEMI/SP3/ENG/TZ1/01.a.i/M

 

Must cut CH2–CO bond AND enclose all of the –COOH group.

[1 mark]

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