DP Chemistry (last assessment 2024)

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Question 19N.2.hl.TZ0.a

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Date November 2019 Marks available [Maximum mark: 2] Reference code 19N.2.hl.TZ0.a
Level hl Paper 2 Time zone TZ0
Command term Annotate, Show Question number a Adapted from N/A
a.
[Maximum mark: 2]
19N.2.hl.TZ0.a

Another common acid found in food is ethanoic acid.

A sample of ethanoic acid was titrated with sodium hydroxide solution, and the following pH curve obtained.

Annotate the graph to show the buffer region and the volume of sodium hydroxide at the equivalence point.

[2]

Markscheme

buffer region on graph ✔
equivalence point/Veq on graph ✔

NOTE: Construction lines not required.

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