A student investigated the rate of decomposition of hydrogen peroxide by measuring the volume of oxygen gas produced over time in the presence of a catalyst.
A tangent has been drawn to the curve in Figure 1 at t=40 st = 40\text{ s}t=40 s.
Calculate the rate of reaction at 40 s. Show your working.
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.
