Free interactive chemistry · SIM-ANAL-004

Elemental analysis

Work out percentage composition and the empirical formula from combustion and nitrogen analysis.

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How to use this simulation

Choose the method: C, H (combustion), Dumas, Kjeldahl or Carius.
Enter or adjust the experimental masses.
Follow the calculation step by step.

What to notice

% O is usually found by difference.
Kjeldahl does not work for nitro, azo or ring nitrogen.

Try this

From 0.20 g giving 0.44 g CO₂ and 0.18 g H₂O, find the empirical formula yourself.

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