DP Chemistry (last assessment 2024)
Question 18M.2.hl.TZ1.1e.ii
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.hl.TZ1.1e.ii |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Sketch | Question number | e.ii | Adapted from | N/A |
e.ii.
[Maximum mark: 2]
18M.2.hl.TZ1.1e.ii
Urea, (H2N)2CO, is excreted by mammals and can be used as a fertilizer.
(e.ii)
Sketch two different hydrogen bonding interactions between ammonia and water.
[2]
Markscheme
Award [1] for each correct interaction.
If lone pairs are shown on N or O, then the lone pair on N or one of the lone pairs on O MUST be involved in the H-bond.
Penalize solid line to represent H-bonding only once.
[2 marks]
