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AQA · GCSE · Chemistry · Higher

Balancing iron and chlorine stoichiometry

Q07.3 1 mark

When iron reacts with chlorine, 0.12 mol of iron reacts with 0.18 mol of chlorine (Cl₂).

Which is the correct equation for the reaction? Tick one box.

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Marking points

  1. 1 Selects 2 Fe + 3 Cl₂ → 2 FeCl₃.

Why this answer loses marks

I chose the equation with the largest product formula.

Use the reactant mole ratio to derive balanced coefficients, not the apparent formula size.