स्ट्रोंटियम ज्वाला परीक्षण

लाल रंग की ज्वाला से स्ट्रोंटियम की पहचान

Flame Tests Beginner (Middle School) 15 मिनट ~$10.00

उद्देश्य

स्ट्रोंटियम आयनों द्वारा उत्पन्न चमकीली लाल ज्वाला का अवलोकन करें, जो आमतौर पर लाल आतिशबाजी और आपातकालीन सिग्नल फ्लेयर में उपयोग की जाती है।

पृष्ठभूमि

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.

सुरक्षा चेतावनियाँ

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

आवश्यक PPE

goggles lab_coat

सामग्री

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

उपकरण

Bunsen burner Nichrome wire loop Watch glass Forceps

प्रक्रिया

1

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

2 मिनट
2

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

1 मिनट
3

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

2 मिनट
4

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

2 मिनट
5

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

1 मिनट

अपेक्षित परिणाम

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.

सफाई

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

Frequently Asked Questions

What is the objective of स्ट्रोंटियम ज्वाला परीक्षण?
स्ट्रोंटियम आयनों द्वारा उत्पन्न चमकीली लाल ज्वाला का अवलोकन करें, जो आमतौर पर लाल आतिशबाजी और आपातकालीन सिग्नल फ्लेयर में उपयोग की जाती है।
How difficult is स्ट्रोंटियम ज्वाला परीक्षण?
This experiment is rated as Beginner (Middle School). It takes approximately 15 minutes to complete.
What safety precautions are needed for स्ट्रोंटियम ज्वाला परीक्षण?
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 स्ट्रोंटियम ज्वाला परीक्षण?
The main materials required are: Strontium chloride (SrCl₂), Hydrochloric acid (HCl), Distilled water.
What results should I expect from स्ट्रोंटियम ज्वाला परीक्षण?
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.