Prueba de Llama con Estroncio

Identificación del estroncio por su llama rojo escarlata

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

Objetivo

Observar la brillante llama rojo escarlata producida por los iones de estroncio, comúnmente utilizada en fuegos artificiales rojos y bengalas de emergencia.

Antecedentes

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.

Advertencias de seguridad

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

EPP requerido

goggles lab_coat

Materiales

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

Equipamiento

Bunsen burner Nichrome wire loop Watch glass Forceps

Procedimiento

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

Resultados esperados

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.

Limpieza

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

Detalles

Categoría
Flame Tests
Dificultad
Beginner (Middle School)
Duración
15 min
Costo estimado
$10,00
Pasos
5
Materiales
3

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Frequently Asked Questions

What is the objective of Prueba de Llama con Estroncio?
Observar la brillante llama rojo escarlata producida por los iones de estroncio, comúnmente utilizada en fuegos artificiales rojos y bengalas de emergencia.
How difficult is Prueba de Llama con Estroncio?
This experiment is rated as Beginner (Middle School). It takes approximately 15 minutes to complete.
What safety precautions are needed for Prueba de Llama con Estroncio?
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 Prueba de Llama con Estroncio?
The main materials required are: Strontium chloride (SrCl₂), Hydrochloric acid (HCl), Distilled water.
What results should I expect from Prueba de Llama con Estroncio?
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.