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Rates of reaction

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Question 120

A student investigated the rate of the catalytic decomposition of hydrogen peroxide using different physical forms of a manganese(IV) oxide catalyst.

The table below shows the results of their experiment:

Physical form of MnO2\text{MnO}_2MnO2​ catalystVolume of oxygen gas collected in 6 minutes in cm3\text{cm}^3cm3
Coarse granules27
Fine granules63
Ultrafine powder108

Calculate the average rate of reaction for the ultrafine powder of manganese(IV) oxide in cm3 s−1\text{cm}^3 \text{ s}^{-1}cm3 s−1.

[3]

Rates of reaction Questions

  1. GCSE
  2. /Chemistry
  3. /Rates of reaction

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.

Question bank