A student investigated the rate of reaction between magnesium and dilute sulfuric acid:
Mg(s)+H2SO4(aq)→MgSO4(aq)+H2(g) \text{Mg(s)} + \text{H}_2\text{SO}_4\text{(aq)} \rightarrow \text{MgSO}_4\text{(aq)} + \text{H}_2\text{(g)} Mg(s)+H2SO4(aq)→MgSO4(aq)+H2(g)They measured the volume of hydrogen gas produced over time. The curve obtained using a 0.24 g strip of magnesium ribbon is shown below as line A.
The student repeated the experiment, keeping all other conditions identical (including temperature, and the volume and concentration of the sulfuric acid), but used 0.24 g of finely powdered magnesium instead of the magnesium ribbon strip.
Sketch the curve you would expect when the experiment is repeated using the powdered magnesium. Label your new line B.
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.
