DP Chemistry (last assessment 2024)
Question 19M.1.hl.TZ1.22
Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1.hl.TZ1.22 |
Level | hl | Paper | 1 | Time zone | TZ1 |
Command term | Question number | 22 | Adapted from | N/A |
22.
[Maximum mark: 1]
19M.1.hl.TZ1.22
Kc for 2N2O (g) 2N2 (g) + O2 (g) is 7.3 × 1034.
What is Kc for the following reaction, at the same temperature?
N2 (g) + O2 (g) N2O (g)
A. 7.3 × 1034
B.
C.
D.
[1]
Markscheme
B
Examiners report
Candidates scored well while one teacher thought it was a trick question and particularly tough. Relationship between K values on reversed equations should be understood.