Figure 1 shows a graph of the volume of carbon dioxide gas produced over time during a reaction between calcium carbonate and hydrochloric acid.
Using the tangent drawn in Figure 1, calculate the rate of reaction at 30 seconds in cm3\text{cm}^3cm3 per second.
rate of reaction=change in gas volumechange in time \text{rate of reaction} = \frac{\text{change in gas volume}}{\text{change in time}} rate of reaction=change in timechange in gas volumePractise Edexcel GCSE Chemistry Rates of reaction with exam-style questions for Foundation and Higher tier. 166 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
