Prueba de Llama con Calcio

Identificación del calcio por su llama naranja-rojiza

Flame Tests Beginner (Middle School) 15 min ~$5,00

Objetivo

Observar la llama rojo ladrillo a naranja-rojiza producida por los iones de calcio, un elemento común en la caliza, el mármol y los huesos.

Antecedentes

Calcium produces a distinctive brick-red to orange-red flame color. The emission results from electronic transitions in calcium atoms excited by the flame energy. Calcium is one of the most abundant elements in the Earth's crust and its flame test is a useful diagnostic tool in mineral identification.

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

  • Calcium chloride (CaCl₂) (1 g)
    Common road de-icer
  • 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 calcium chloride on the watch glass and collect 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

Record the brick-red to orange-red color and note how it differs from strontium and lithium.

2 min

Resultados esperados

A brick-red to orange-red flame should appear. The color is less vivid than strontium's scarlet and more orange than lithium's crimson. Calcium's flame is moderate in intensity.

Limpieza

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

Detalles

Categoría
Flame Tests
Dificultad
Beginner (Middle School)
Duración
15 min
Costo estimado
$5,00
Pasos
4
Materiales
3

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Frequently Asked Questions

What is the objective of Prueba de Llama con Calcio?
Observar la llama rojo ladrillo a naranja-rojiza producida por los iones de calcio, un elemento común en la caliza, el mármol y los huesos.
How difficult is Prueba de Llama con Calcio?
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 Calcio?
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 Calcio?
The main materials required are: Calcium chloride (CaCl₂), Hydrochloric acid (HCl), Distilled water.
What results should I expect from Prueba de Llama con Calcio?
A brick-red to orange-red flame should appear. The color is less vivid than strontium's scarlet and more orange than lithium's crimson. Calcium's flame is moderate in intensity.