फिटकरी क्रिस्टल उगाना

बड़े पारदर्शी फिटकरी क्रिस्टल बनाना

Crystallization Beginner (Middle School) 30 मिनट ~$6.00

उद्देश्य

अतिसंतृप्त विलयन से बड़े, पारदर्शी अष्टभुजाकार पोटेशियम फिटकरी क्रिस्टल उगाएं।

पृष्ठभूमि

Potassium alum (KAl(SO₄)₂·12H₂O) crystallizes in a beautiful octahedral habit. It is non-toxic, inexpensive, and easy to grow into large crystals. The octahedral shape reflects the cubic crystal system of alum.

सुरक्षा चेतावनियाँ

  • Use care with hot water
  • Alum is generally safe but avoid ingestion of large amounts

आवश्यक PPE

goggles

सामग्री

  • Potassium alum (100 g)
    Food-grade available
  • Distilled water (300 mL)
    Hot
  • Thread or monofilament (30 cm)

उपकरण

500 mL beaker Hot plate Stirring rod Pencil Filter paper

प्रक्रिया

1

Heat 300 mL of distilled water to near boiling. Slowly dissolve as much alum as possible (about 80-100 g) while stirring.

10 मिनट Handle hot liquids carefully
2

Filter the hot solution to remove any undissolved particles.

3 मिनट
3

Pour a small amount into a dish and let it cool to form seed crystals overnight.

2 मिनट
4

Select the best octahedral seed crystal. Tie it to thread and suspend in the main solution.

5 मिनट
5

Cover loosely and store in a stable, cool location. Check daily.

2 मिनट
6

After 1-2 weeks, remove the crystal, dry with a paper towel, and photograph the octahedral faces.

5 मिनट

अपेक्षित परिणाम

Large, transparent, octahedral crystals up to 2-4 cm across after 1-2 weeks. The faces should be smooth and the crystal should be nearly colorless and transparent.

सफाई

Alum solution can be saved for future crystal growing or disposed down the drain. Rinse beaker.

विवरण

श्रेणी
Crystallization
कठिनाई
Beginner (Middle School)
अवधि
30 मिनट
अनुमानित लागत
$6.00
चरण
6
सामग्री
3

अधिक प्रयोग

अतिसंतृप्ति और तात्कालिक क्रिस्टलीकरण 35 min कॉपर सल्फेट क्रिस्टल उगाना 30 min चीनी क्रिस्टल रॉक कैंडी 25 min नमक और रेत का खंडित क्रिस्टलीकरण 35 min बिस्मथ इंद्रधनुष क्रिस्टल उगाना 45 min बेंजोइक अम्ल का पुनःक्रिस्टलीकरण 45 min सैलोल (फेनाइल सैलिसिलेट) का क्रिस्टलीकरण 30 min

Frequently Asked Questions

What is the objective of फिटकरी क्रिस्टल उगाना?
अतिसंतृप्त विलयन से बड़े, पारदर्शी अष्टभुजाकार पोटेशियम फिटकरी क्रिस्टल उगाएं।
How difficult is फिटकरी क्रिस्टल उगाना?
This experiment is rated as Beginner (Middle School). It takes approximately 30 minutes to complete.
What safety precautions are needed for फिटकरी क्रिस्टल उगाना?
Key safety precautions include: Use care with hot water; Alum is generally safe but avoid ingestion of large amounts.
What materials are needed for फिटकरी क्रिस्टल उगाना?
The main materials required are: Potassium alum, Distilled water, Thread or monofilament.
What results should I expect from फिटकरी क्रिस्टल उगाना?
Large, transparent, octahedral crystals up to 2-4 cm across after 1-2 weeks. The faces should be smooth and the crystal should be nearly colorless and transparent.