STP'de Gazın Molar Hacmi

Bütan kullanarak 22,4 L/mol'ü deneysel belirleme

Gas Laws Intermediate (High School) 35 dak ~$6,00

Hedef

Bir çakmaktan salınan gazın kütlesini ve hacmini ölçerek STP'de bütan gazının molar hacmini belirlemek.

Arka Plan

A butane lighter releases pure C₄H₁₀ gas. By weighing the lighter before and after releasing gas into a water-displacement collection system, and measuring the volume collected, the molar volume can be calculated and compared to the theoretical 22.4 L/mol at STP.

Güvenlik Uyarıları

  • Butane is extremely flammable — NO open flames during the experiment
  • Ensure adequate ventilation
  • Do not inhale butane

Gerekli KKD

goggles

Malzemeler

  • Butane lighter (1)
    Disposable, transparent preferred
  • Distilled water (1 L)
  • Ice (as needed)
    Optional, for STP correction

Ekipman

Pneumatic trough or large container Graduated cylinder (500 mL or 1 L) Analytical balance (0.01 g) Thermometer Barometer Rubber tubing

Prosedür

1

Weigh the butane lighter on the analytical balance. Record the mass to 0.01 g.

2 dak
2

Fill the graduated cylinder with water, invert it in the pneumatic trough.

3 dak
3

Connect rubber tubing to the lighter nozzle. Submerge the other end under the graduated cylinder.

3 dak No flames nearby
4

Release butane slowly into the inverted cylinder, collecting 200-400 mL of gas.

5 dak Butane is flammable
5

Record the volume of gas collected. Equalize water levels first.

2 dak
6

Reweigh the lighter. The mass difference is the mass of butane released.

2 dak
7

Record temperature and pressure. Calculate moles of butane (M=58.12 g/mol). Correct volume to STP using combined gas law.

8 dak
8

Calculate molar volume = V(STP)/n. Compare with theoretical 22.4 L/mol.

5 dak

Beklenen Sonuçlar

0.3 g butane = 0.00516 mol should occupy about 116 mL at STP. Molar volume should be approximately 22-24 L/mol, within 5-10% of the theoretical 22.4 L/mol.

Temizlik

Ensure no butane remains in the room — ventilate well. Drain water apparatus. Store lighter safely.

Ayrıntılar

Kategori
Gas Laws
Zorluk
Intermediate (High School)
Süre
35 dak
Tahmini Maliyet
$6,00
Adımlar
8
Malzemeler
3

Daha Fazla Deney

Balonla Charles Yasası 30 min Boyle Yasasının Doğrulanması 40 min Buhar Basıncı ve Kaynama Noktası 45 min CO₂ ve Kireç Suyu Testi 20 min Difüzyon Hızı Karşılaştırması (Graham Yasası) 30 min Hidrojen Gazı Toplama 35 min Kartezyen Dalgıcı 15 min Magnezyumlu Gaz Stokiyometrisi 40 min

Frequently Asked Questions

What is the objective of STP'de Gazın Molar Hacmi?
Bir çakmaktan salınan gazın kütlesini ve hacmini ölçerek STP'de bütan gazının molar hacmini belirlemek.
How difficult is STP'de Gazın Molar Hacmi?
This experiment is rated as Intermediate (High School). It takes approximately 35 minutes to complete.
What safety precautions are needed for STP'de Gazın Molar Hacmi?
Key safety precautions include: Butane is extremely flammable — NO open flames during the experiment; Ensure adequate ventilation; Do not inhale butane.
What materials are needed for STP'de Gazın Molar Hacmi?
The main materials required are: Butane lighter, Distilled water, Ice.
What results should I expect from STP'de Gazın Molar Hacmi?
0.3 g butane = 0.00516 mol should occupy about 116 mL at STP. Molar volume should be approximately 22-24 L/mol, within 5-10% of the theoretical 22.4 L/mol.