DP Chemistry (last assessment 2024)

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Question 19N.1.hl.TZ0.17

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.1.hl.TZ0.17
Level hl Paper 1 Time zone TZ0
Command term Determine Question number 17 Adapted from N/A
17.
[Maximum mark: 1]
19N.1.hl.TZ0.17

Which reaction has the greatest increase in entropy of the system?

A. HCl (g) + NH3 (g) → NH4Cl (s)

B. (NH4)2Cr2O7 (s) → Cr2O3 (s) + N2 (g) + 4H2O (g)

C. CaCO3 (s) → CaO (s) + CO2 (g)

D. I2 (g) → I2 (s)

[1]

Markscheme

B

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