The same gas-producing reaction is carried out in two open flasks. Each flask remains on a balance until the reading stops changing.
| Experiment | P | Q |
|---|---|---|
| Final loss in mass / g | 0.44 | 0.44 |
What does the equal final loss in mass most likely show?
The same amount of limiting reactant was used in both experiments
Every reactant had the same initial concentration in both experiments
The reactions had the same initial rate in both experiments
The reactions took the same time to finish in both experiments
122 exam-style questions on Edexcel GCSE Chemistry 8.1 Rates of reaction, covering 8.1.1 Measuring and interpreting rates of reaction, 8.1.2 Collision theory and the factors affecting rate, and 8.1.3 Catalysts and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.