Cobalt(II) carbonate reacts with dilute hydrochloric acid to produce carbon dioxide gas.
The rate of reaction between cobalt(II) carbonate and dilute hydrochloric acid at 25degC was investigated.
The investigation was carried out using different forms of solid cobalt(II) carbonate, while keeping the total mass of cobalt(II) carbonate and all other conditions constant.
The results are shown in Table 1.
| Form of cobalt(II) carbonate | Volume of carbon dioxide gas collected in 5 minutes in cm3\text{cm}^3cm3 |
|---|---|
| Large chips | 18 |
| Medium granules | 42 |
| Fine powder | 85 |
State, using the information in Table 1, the effect of the surface area of the cobalt(II) carbonate on the rate of this reaction.
127 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.