Volume Molar Gas pada STP

Menentukan 22,4 L/mol secara eksperimental menggunakan butana

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

Tujuan

Tentukan volume molar gas butana pada STP dengan mengukur massa dan volume gas yang dilepaskan dari korek api.

Latar Belakang

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.

Peringatan Keselamatan

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

APD yang Diperlukan

goggles

Bahan

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

Peralatan

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

Prosedur

1

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

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2

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

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3

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

3 menit No flames nearby
4

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

5 menit Butane is flammable
5

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

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6

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

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7

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

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8

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

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Hasil yang Diharapkan

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.

Pembersihan

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

Detail

Kategori
Gas Laws
Tingkat Kesulitan
Intermediate (High School)
Durasi
35 menit
Perkiraan Biaya
$6,00
Langkah
8
Bahan
3

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Frequently Asked Questions

What is the objective of Volume Molar Gas pada STP?
Tentukan volume molar gas butana pada STP dengan mengukur massa dan volume gas yang dilepaskan dari korek api.
How difficult is Volume Molar Gas pada STP?
This experiment is rated as Intermediate (High School). It takes approximately 35 minutes to complete.
What safety precautions are needed for Volume Molar Gas pada STP?
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 Volume Molar Gas pada STP?
The main materials required are: Butane lighter, Distilled water, Ice.
What results should I expect from Volume Molar Gas pada STP?
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.