Menumbuhkan Kristal Tembaga Sulfat

Menghasilkan kristal biru besar dengan evaporasi lambat

Crystallization Beginner (Middle School) 30 menit ~$8,00

Tujuan

Tumbuhkan kristal tembaga sulfat pentahidrat yang besar dan terbentuk dengan baik menggunakan metode evaporasi lambat, mendemonstrasikan lewat jenuh dan pembentukan kisi kristal.

Latar Belakang

Copper sulfate pentahydrate (CuSO₄·5H₂O) forms beautiful blue triclinic crystals. By preparing a saturated solution and allowing it to evaporate slowly over several days, large single crystals can be grown. The process demonstrates concepts of solubility, supersaturation, and crystal nucleation.

Peringatan Keselamatan

  • Copper sulfate is toxic if ingested
  • Wear gloves when handling the solution
  • Wash hands thoroughly after the experiment
  • Do not dispose of copper sulfate down the drain

APD yang Diperlukan

goggles gloves

Bahan

  • Copper(II) sulfate pentahydrate (50 g)
    Blue crystals
  • Distilled water (200 mL)
    Hot
  • Thread or fishing line (30 cm)
    For seed crystal
  • Pencil or stick (1)
    To suspend seed crystal

Peralatan

400 mL beaker Hot plate Stirring rod Filter paper Funnel

Prosedur

1

Heat 200 mL of distilled water to 60-70°C. Add copper sulfate gradually while stirring until no more dissolves (saturated solution).

10 menit Wear gloves — copper sulfate is toxic
2

Filter the hot saturated solution through filter paper to remove any undissolved particles.

5 menit
3

Pour a small amount into a petri dish and allow it to cool. Select the best small crystal as a seed crystal after 24 hours.

5 menit
4

Tie the seed crystal to a thread and suspend it from a pencil placed across the top of the beaker of saturated solution.

5 menit
5

Cover the beaker loosely with filter paper to allow slow evaporation. Place in a vibration-free location.

2 menit
6

Check daily for crystal growth. Remove any small crystals that form on the thread or beaker walls.

3 menit

Hasil yang Diharapkan

After 1-2 weeks, the seed crystal should grow into a large blue crystal (1-3 cm) with well-defined facets. The crystal has a triclinic shape with distinct flat faces. Faster evaporation produces many small crystals; slower produces fewer, larger ones.

Pembersihan

Collect excess copper sulfate solution and solid for reuse or proper disposal in heavy metal waste. Do not pour down the drain.

Detail

Kategori
Crystallization
Tingkat Kesulitan
Beginner (Middle School)
Durasi
30 menit
Perkiraan Biaya
$8,00
Langkah
6
Bahan
4

Eksperimen Lainnya

Kristalisasi Fraksional Garam dan Pasir 35 min Kristalisasi Salol (Fenil Salisilat) 30 min Lewat Jenuh dan Kristalisasi Seketika 35 min Menumbuhkan Kristal Pelangi Bismut 45 min Menumbuhkan Kristal Tawas 30 min Permen Batu Kristal Gula 25 min Rekristalisasi Asam Benzoat 45 min

Frequently Asked Questions

What is the objective of Menumbuhkan Kristal Tembaga Sulfat?
Tumbuhkan kristal tembaga sulfat pentahidrat yang besar dan terbentuk dengan baik menggunakan metode evaporasi lambat, mendemonstrasikan lewat jenuh dan pembentukan kisi kristal.
How difficult is Menumbuhkan Kristal Tembaga Sulfat?
This experiment is rated as Beginner (Middle School). It takes approximately 30 minutes to complete.
What safety precautions are needed for Menumbuhkan Kristal Tembaga Sulfat?
Key safety precautions include: Copper sulfate is toxic if ingested; Wear gloves when handling the solution; Wash hands thoroughly after the experiment.
What materials are needed for Menumbuhkan Kristal Tembaga Sulfat?
The main materials required are: Copper(II) sulfate pentahydrate, Distilled water, Thread or fishing line, Pencil or stick.
What results should I expect from Menumbuhkan Kristal Tembaga Sulfat?
After 1-2 weeks, the seed crystal should grow into a large blue crystal (1-3 cm) with well-defined facets. The crystal has a triclinic shape with distinct flat faces. Faster evaporation produces many small crystals; slower produces fewer, larger ones.