DP Chemistry (last assessment 2024)
Question 18M.2.hl.TZ1.b
| Date | May 2018 | Marks available | [Maximum mark: 3] | Reference code | 18M.2.hl.TZ1.b |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Apply, Predict | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 3]
18M.2.hl.TZ1.b
Urea, (H2N)2CO, is excreted by mammals and can be used as a fertilizer.
The structural formula of urea is shown.
Predict the electron domain and molecular geometries at the nitrogen and carbon atoms, applying the VSEPR theory.
[3]
Markscheme
Note: Urea’s structure is more complex than that predicted from VSEPR theory.
[3 marks]