DP Chemistry (last assessment 2024)

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Question 20N.1.sl.TZ0.8

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1.sl.TZ0.8
Level sl Paper 1 Time zone TZ0
Command term Apply Question number 8 Adapted from N/A
8.
[Maximum mark: 1]
20N.1.sl.TZ0.8

Which oxide will dissolve in water to give the solution with the lowest pH?

A.  P4O10

B.  SiO2

C.  Al2O3

D.  MgO

[1]

Markscheme

A

Examiners report

Fairly well answered. Almost 70% of candidates could identify that non-metallic oxides would dissolve in water to yield a substance of low pH.