Chemistry path · GCSE Chemistry

Have all reactants reached the atom-economy denominator?

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Practice question

A chemical plant makes hydrogen peroxide by BaO₂ + H₂SO₄ → BaSO₄ + H₂O₂. Hydrogen peroxide is the desired product. Relative atomic masses are Ba = 137, H = 1, S = 32 and O = 16. Calculate the atom economy for hydrogen peroxide.

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Official curriculum

4.3.3.2 Atom economy

This challenge practises knowledge and exam skills from the official GCSE science curriculum. Use these sources to see the exact subject content and its wider Key Stage 4 context.

AQA specification 4.3.3.2 Atom economy GOV.UK Key Stage 4 science programme

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