DP Chemistry (last assessment 2024)
Question 19M.1.hl.TZ2.1
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1.hl.TZ2.1 |
| Level | hl | Paper | 1 | Time zone | TZ2 |
| Command term | Question number | 1 | Adapted from | N/A |
1.
[Maximum mark: 1]
19M.1.hl.TZ2.1
How many moles of magnesium hydroxide are produced with 0.50 mol of ammonia?
Mg3N2 (s) + 6H2O (l) → 3Mg(OH)2 (aq) + 2NH3 (aq)
A. 0.25
B. 0.33
C. 0.75
D. 1.5
[1]
Markscheme
C
Examiners report
90 % of the candidates were able to deduce the amount of a product given the amount of another product and the balanced equation.