DP Chemistry (first assessment 2025)
Question 19N.2.SL.TZ0.2a(i)
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.2.SL.TZ0.2a(i) |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Determine | Question number | a(i) | Adapted from | N/A |
a(i).
[Maximum mark: 1]
19N.2.SL.TZ0.2a(i)
(a(i))
Determine the mole ratio of S2O32− to O2, using the balanced equations.
[1]
Markscheme
4 : 1 ✔
Syllabus sections
Reactivity 2. How much, how fast and how far? » Reactivity 2.1—How much? The amount of chemical change » Reactivity 2.1.2—The mole ratio of an equation can be used to determine: • the masses and/or volumes of reactants and products • the concentrations of reactants and products for reactions occurring in solution. Calculate reacting masses and/or volumes and concentrations of reactants and products.