DP Chemistry (last assessment 2024)

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Question 17N.2.hl.TZ0.6a.i

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.2.hl.TZ0.6a.i
Level hl Paper 2 Time zone TZ0
Command term State Question number a.i Adapted from N/A
a.i.
[Maximum mark: 1]
17N.2.hl.TZ0.6a.i

Many reactions are in a state of equilibrium.

The following reaction was allowed to reach equilibrium at 761 K.

H2 (g) + I2 (g) ⇌ 2HI (g)               ΔHθ < 0

(a.i)

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

[1]

Markscheme

Kc =  [HI] 2 [ H 2 ][ I 2 ]

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