DP Chemistry (last assessment 2024)
Question 19M.1.sl.TZ2.4
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1.sl.TZ2.4 |
| Level | sl | Paper | 1 | Time zone | TZ2 |
| Command term | Question number | 4 | Adapted from | N/A |
4.
[Maximum mark: 1]
19M.1.sl.TZ2.4
What is the concentration, in mol dm−3, of 20.0 g of NaOH (Mr = 40.0) in 500.0 cm3?
A. 0.250
B. 0.500
C. 1.00
D. 4.00
[1]
Markscheme
C
Examiners report
75 % of the candidates were able to calculate the molar concentration of the NaOH solution. The question had a good discrimination index.