DP Chemistry (last assessment 2024)

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Question 19N.2.sl.TZ0.5a(iii)

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Date November 2019 Marks available [Maximum mark: 2] Reference code 19N.2.sl.TZ0.5a(iii)
Level sl Paper 2 Time zone TZ0
Command term Annotate, Show Question number a(iii) Adapted from N/A
a(iii).
[Maximum mark: 2]
19N.2.sl.TZ0.5a(iii)

Copper forms two chlorides, copper(I) chloride and copper(II) chloride.

(a(iii))

The diagram shows the Maxwell–Boltzmann distribution and potential energy profile for the reaction without a catalyst.

Annotate both charts to show the activation energy for the catalysed reaction, using the label Ea (cat).

[2]

Markscheme

Ea (cat) to the left of Ea ✔                        

 

peak lower AND Ea (cat) smaller ✔

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