Strontiumflammtest

Strontium an seiner scharlachroten Flamme erkennen

Flame Tests Beginner (Middle School) 15 Min. ~$10,00

Ziel

Die leuchtend scharlachrote Flamme von Strontiumionen beobachten, die häufig bei roten Feuerwerkskörpern und Notfackeln eingesetzt wird.

Hintergrund

Strontium compounds produce a vivid scarlet-red flame when heated, with primary emission lines at 460.7 nm and 707.0 nm. This distinctive red is widely used in pyrotechnics for red fireworks, road flares, and military signal flares. Strontium's flame color is more brilliant and more orange-red compared to lithium's deeper crimson.

Sicherheitswarnungen

  • Wear safety goggles at all times
  • Keep hair tied back near open flames
  • Handle HCl with care

Erforderliche PSA

goggles lab_coat

Materialien

  • Strontium chloride (SrCl₂) (1 g)
  • Hydrochloric acid (HCl) (10 mL)
    1M concentration
  • Distilled water (50 mL)
    For cleaning

Ausrüstung

Bunsen burner Nichrome wire loop Watch glass Forceps

Durchführung

1

Clean the nichrome wire by dipping in HCl and heating until no color appears.

2 Min.
2

Place strontium chloride on the watch glass and pick up a sample on the clean wire.

1 Min.
3

Hold the wire in the Bunsen burner flame and observe the flame color.

2 Min.
4

Compare the scarlet-red color with lithium (crimson) if previously tested.

2 Min.
5

Record observations noting intensity and hue differences from other red-producing elements.

1 Min.

Erwartete Ergebnisse

A bright scarlet-red flame should appear, distinctly more orange-red than lithium's crimson. The color is vivid and persistent, easily distinguished from other metal flame colors.

Aufräumen

Clean wire with HCl. Dispose of chemicals per lab protocol.

Details

Kategorie
Flame Tests
Schwierigkeit
Beginner (Middle School)
Dauer
15 Min.
Geschätzte Kosten
$10,00
Schritte
5
Materialien
3

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Frequently Asked Questions

What is the objective of Strontiumflammtest?
Die leuchtend scharlachrote Flamme von Strontiumionen beobachten, die häufig bei roten Feuerwerkskörpern und Notfackeln eingesetzt wird.
How difficult is Strontiumflammtest?
This experiment is rated as Beginner (Middle School). It takes approximately 15 minutes to complete.
What safety precautions are needed for Strontiumflammtest?
Key safety precautions include: Wear safety goggles at all times; Keep hair tied back near open flames; Handle HCl with care.
What materials are needed for Strontiumflammtest?
The main materials required are: Strontium chloride (SrCl₂), Hydrochloric acid (HCl), Distilled water.
What results should I expect from Strontiumflammtest?
A bright scarlet-red flame should appear, distinctly more orange-red than lithium's crimson. The color is vivid and persistent, easily distinguished from other metal flame colors.