Mean rate of reaction formula
The mean rate of reaction formula as it is used in GCSE Chemistry, taken from the GCSE Chemistry formula sheet.
The formula
How to use it in the exam
- Write the formula down before substituting — most mark schemes award a method mark for a correct, clearly quoted formula.
- Check every quantity is in consistent units before you substitute, then substitute in one step so the working stays easy to follow.
- Show the rearrangement rather than jumping to the answer, and give the final value to the accuracy the question asks for.
Related rates & physical formulas
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