DP Chemistry (last assessment 2024)
Question 19M.2.hl.TZ1.5c(i)
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.hl.TZ1.5c(i) |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Draw | Question number | c(i) | Adapted from | N/A |
c(i).
[Maximum mark: 1]
19M.2.hl.TZ1.5c(i)
Both vinegar (a dilute aqueous solution of ethanoic acid) and bleach are used as cleaning agents.
Bleach reacts with ammonia, also used as a cleaning agent, to produce the poisonous compound chloramine, NH2Cl.
(c(i))
Draw a Lewis (electron dot) structure of chloramine.
[1]
Markscheme
[✔]
Note: Accept any combination of dots/crosses or lines to represent electron pairs.
Examiners report
Most candidates correctly drew the Lewis structure of chloramine. Some left off lone pair electrons.
