DP Chemistry (first assessment 2025)

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Question 22M.2.SL.TZ2.c

Date	May 2022	Marks available	[Maximum mark: 1]	Reference code	22M.2.SL.TZ2.c
Level	SL	Paper	2	Time zone	TZ2
Command term	State	Question number	c	Adapted from	N/A

c.

[Maximum mark: 1]

22M.2.SL.TZ2.c

State the equilibrium constant expression, K_c, for this reaction.

[1]

Markscheme

$K_{c} = \frac{{[HI]}^{2}}{[H_{2}] [I_{2}]}$ ✔

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Syllabus sections

Reactivity 2. How much, how fast and how far? » Reactivity 2.3—How far? The extent of chemical change » Reactivity 2.3.2—The equilibrium law describes how the equilibrium constant, K, can be determined from the stoichiometry of a reaction. Deduce the equilibrium constant expression from an equation for a homogeneous reaction.