DP Chemistry (last assessment 2024)

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Question 17N.1.sl.TZ0.15

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.1.sl.TZ0.15
Level sl Paper 1 Time zone TZ0
Command term Question number 15 Adapted from N/A
15.
[Maximum mark: 1]
17N.1.sl.TZ0.15

What is the enthalpy change, in kJ, of the following reaction?

3H2 (g) + N2 (g) ⇌ 2NH3 (g)

A. (6 × 391) − [(3 × 436) + 945]

B. (3 × 391) − (436 + 945)

C. −[(3 × 436) + 945] + (3 × 391)

D. −(6 × 391) + [(3 × 436) + 945]

[1]

Markscheme

D

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