DP Chemistry (first assessment 2025)
Question 19M.1A.SL.TZ1.2
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1A.SL.TZ1.2 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Question number | 2 | Adapted from | N/A |
2.
[Maximum mark: 1]
19M.1A.SL.TZ1.2
What volume of carbon dioxide, CO2 (g), can be obtained by reacting 1 dm3 of methane, CH4 (g), with 1 dm3 of oxygen, O2 (g)?
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l)
A. 0.5 dm3
B. 1 dm3
C. 2 dm3
D. 6 dm3
[1]
Markscheme
A
Examiners report
The concept of using volume ratios of gases as mole ratios in balanced equations was well answered.
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.