DP Chemistry (last assessment 2024)
Question 19M.2.sl.TZ2.3b(i)
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.sl.TZ2.3b(i) |
| Level | sl | Paper | 2 | Time zone | TZ2 |
| Command term | State | Question number | b(i) | Adapted from | N/A |
b(i).
[Maximum mark: 1]
19M.2.sl.TZ2.3b(i)
Dinitrogen monoxide, N2O, causes depletion of ozone in the stratosphere.
Different sources of N2O have different ratios of 14N:15N.
(b(i))
State one analytical technique that could be used to determine the ratio of 14N:15N.
[1]
Markscheme
mass spectrometry/MS [✔]
Examiners report
Well answered. More than half of the candidates stated mass spectrometry is used to determine the ratio of the isotopes.
