Uji Nyala Stronsium

Mengidentifikasi stronsium dari nyala api merah menyala

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

Tujuan

Amati nyala api merah menyala terang yang dihasilkan oleh ion stronsium, yang umum digunakan dalam kembang api merah dan suar darurat.

Latar Belakang

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.

Peringatan Keselamatan

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

APD yang Diperlukan

goggles lab_coat

Bahan

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

Peralatan

Bunsen burner Nichrome wire loop Watch glass Forceps

Prosedur

1

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

2 menit
2

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

1 menit
3

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

2 menit
4

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

2 menit
5

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

1 menit

Hasil yang Diharapkan

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.

Pembersihan

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

Detail

Kategori
Flame Tests
Tingkat Kesulitan
Beginner (Middle School)
Durasi
15 menit
Perkiraan Biaya
$10,00
Langkah
5
Bahan
3

Eksperimen Lainnya

Laboratorium Perbandingan Uji Nyala 45 min Uji Nyala Barium 20 min Uji Nyala Kalium 20 min Uji Nyala Kalsium 15 min Uji Nyala Litium 15 min Uji Nyala Natrium 15 min Uji Nyala Tembaga 15 min

Frequently Asked Questions

What is the objective of Uji Nyala Stronsium?
Amati nyala api merah menyala terang yang dihasilkan oleh ion stronsium, yang umum digunakan dalam kembang api merah dan suar darurat.
How difficult is Uji Nyala Stronsium?
This experiment is rated as Beginner (Middle School). It takes approximately 15 minutes to complete.
What safety precautions are needed for Uji Nyala Stronsium?
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 Uji Nyala Stronsium?
The main materials required are: Strontium chloride (SrCl₂), Hydrochloric acid (HCl), Distilled water.
What results should I expect from Uji Nyala Stronsium?
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.