MolDraw › Templates › Reaction setups › Lassaigne's test (sodium fusion)
Reaction setupsPremium
Lassaigne's test (sodium fusion) template
Premium template. Preview and edit it free in MolDraw; downloading and exporting it is part of MolDraw Pro.
A small piece of sodium and the compound heated in an ignition tube in a Bunsen flame, plunged red hot into distilled water in a china dish, and the boiled, filtered extract tested in test tubes. CBSE class 11 to 12, JEE / NEET.
What the template shows
- Turn N, S and halogens in an organic compound into ions, then test the extract
- Ignition tube
- A pea-sized piece of dry sodium, melted, then a little of the compound; heat until red hot
- Bunsen flame
- Safety screen, goggles; sodium reacts violently with water
- FeSO₄, boil, then dilute H₂SO₄: Prussian blue (NaCN)
- Sodium nitroprusside: violet (Na₂S)
- Boil with dilute HNO₃, add AgNO₃: white (Cl), cream (Br) or yellow (I) precipitate
- China dish
- Plunge the red-hot tube into about 10 cm³ of distilled water (it shatters), boil, then filter: the sodium fusion extract
- Reaction setup
Drawn with 16 shapes – every one editable in MolDraw.
Sources
How to use this template
- Press Edit in MolDraw. The template opens on the canvas of the free MolDraw editor.
- Change anything: move structures, edit atoms and labels, recolour highlights or delete what you do not need.
- Add your own structures, arrows and text next to it, or combine several templates on one page.
- Export the drawing as PNG, SVG or PDF for slides, worksheets, theses and papers.
Frequently asked questions
Is the Lassaigne's test (sodium fusion) template free?
You can preview the Lassaigne's test (sodium fusion) template here and open and edit it in MolDraw for free. Downloading or exporting it is part of MolDraw Pro, together with the other premium templates.
Can I edit the Lassaigne's test (sodium fusion) template?
Yes. It opens as an ordinary MolDraw drawing, so every structure, arrow, label and colour can be changed, and you can add your own content around it.
Is the chemistry checked?
Every structure is checked with RDKit and every curly arrow passes MolDraw’s electron-flow audit. The sources used are listed on this page.
Can I edit the glassware?
Yes. Every piece of glassware is a MolDraw apparatus object: move, resize, recolour the liquid or swap a piece and the joints stay connected.