A student investigated the rate of reaction between calcium carbonate and excess dilute hydrochloric acid at 25∘C25^\circ\text{C}25∘C. They measured the volume of carbon dioxide gas produced over 200 seconds200\text{ seconds}200 seconds.
The results for the reaction at 25∘C25^\circ\text{C}25∘C are shown in the graph below.
The experiment was repeated using the same mass of calcium carbonate and the same volume and concentration of hydrochloric acid, but at a temperature of 40∘C40^\circ\text{C}40∘C. All other variables were kept constant.
Sketch, on the graph, the curve you would expect for this experiment at 40∘C40^\circ\text{C}40∘C.
Practise 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.
