Uji Nyala Kalsium

Mengidentifikasi kalsium dari nyala api oranye-merah

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

Tujuan

Amati nyala api merah bata hingga oranye-merah yang dihasilkan oleh ion kalsium, unsur umum yang ditemukan dalam batu kapur, marmer, dan tulang.

Latar Belakang

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.

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

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

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

2 menit

Hasil yang Diharapkan

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.

Pembersihan

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

Detail

Kategori
Flame Tests
Tingkat Kesulitan
Beginner (Middle School)
Durasi
15 menit
Perkiraan Biaya
$5,00
Langkah
4
Bahan
3

Eksperimen Lainnya

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

Frequently Asked Questions

What is the objective of Uji Nyala Kalsium?
Amati nyala api merah bata hingga oranye-merah yang dihasilkan oleh ion kalsium, unsur umum yang ditemukan dalam batu kapur, marmer, dan tulang.
How difficult is Uji Nyala Kalsium?
This experiment is rated as Beginner (Middle School). It takes approximately 15 minutes to complete.
What safety precautions are needed for Uji Nyala Kalsium?
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 Kalsium?
The main materials required are: Calcium chloride (CaCl₂), Hydrochloric acid (HCl), Distilled water.
What results should I expect from Uji Nyala Kalsium?
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.