DP Chemistry (last assessment 2024)

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Question 21M.2.hl.TZ1.c

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.2.hl.TZ1.c
Level hl Paper 2 Time zone TZ1
Command term Determine Question number c Adapted from N/A
c.
[Maximum mark: 1]
21M.2.hl.TZ1.c

Magnetite, Fe3O4, is another ore of iron that contains both Fe2+ and Fe3+.

Iron has a relatively small specific heat capacity; the temperature of a 50 g sample rises by 44.4°C when it absorbs 1 kJ of heat energy.

Determine the specific heat capacity of iron, in J g−1 K−1. Use section 1 of the data booklet.

[1]

Markscheme

specific heat capacity « = qm×∆T/1000 J50 g×44 K» = 0.45 «J g−1 K−1» ✔

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