Laboratorio N°3: Volumen molar
Ringkasan
TLDRIn this educational video led by Engineer Eduardo from the Peruvian Technological University, students learn about an experiment aimed at determining the molar volume of oxygen and calculating the percentage error involved. The experiment requires various materials including a universal stand, clamps, test tubes, and specific chemicals like potassium chlorate and manganese dioxide. The setup involves an inverted graduated cylinder filled with water, placed in a plastic container, with a connecting hose. The reaction is initiated by heating the reactants, which leads to oxygen production. The displacement of water by oxygen is measured to find the volume. The number of moles is calculated using the mass of oxygen, which is determined by weighing the test tube before and after the reaction. Finally, students calculate the molar volume of oxygen and the percentage error by comparing it to theoretical values.
Takeaways
- 👨🏫 The experiment aims to determine the molar volume of oxygen.
- 🧪 Essential materials include a graduated cylinder, potassium chlorate, and manganese dioxide.
- 🔬 The reaction is initiated using a burner, leading to oxygen production.
- 🌡️ Measurement of temperature and pressure is crucial for calculations.
- ⚖️ The mass of oxygen is determined by weighing the test tube before and after the reaction.
- 📏 The molar volume is calculated using the volume of displaced water and the number of moles.
- 💡 The percentage error is assessed by comparing experimental and theoretical values.
- 🗑️ Clean and organize the workspace after the experiment.
Garis waktu
- 00:00:00 - 00:05:58
In this class, led by Engineer Eduardo, a professor at the Technological University of Peru, students are instructed on how to conduct Practice Number Four. The objective is to determine the experimental molar volume of oxygen and calculate the error percentage. Required materials include a universal support with a clamp, pipette, measuring cylinder, plastic container, aluminum foil, a connecting tube with a stopper, a balance, and a Bunsen burner. Reactants such as potassium chlorate, manganese dioxide, and distilled water are also needed. Students must set up the system with an inverted measuring cylinder filled with water in a plastic container, record the test tube's weight, add the reactants, and initiate a reaction that releases oxygen. This oxygen will displace water in the cylinder, allowing students to measure its volume, calculate the mass and moles of the oxygen, and finally determine the experimental molar volume to identify the reaction's error percentage.
Peta Pikiran
Video Tanya Jawab
What is the main objective of this experiment?
The main objective is to determine the molar volume of oxygen and calculate the percentage error.
What materials are needed for this experiment?
Materials needed include a universal stand, clamps, a 100 ml graduated cylinder, test tubes, a plastic container, aluminum foil, a connecting hose with a stopper, potassium chlorate, manganese dioxide, distilled water, an electronic balance, and a burner.
What are the reactants used in the experiment?
The reactants used are potassium chlorate and manganese dioxide.
How is the system set up for the experiment?
The system involves an inverted graduated cylinder filled with water placed inside a plastic container, with a connecting hose inserted into it.
How is the reaction initiated?
The reaction is initiated by heating the test tube containing the reactants using a non-luminous flame from the burner.
What is observed during the reaction?
Oxygen bubbles are observed, displacing the water in the inverted graduated cylinder.
How is the completion of the reaction determined?
The reaction is complete when no more bubbling is observed.
How is the mass of oxygen determined?
The mass of oxygen is determined by weighing the test tube before and after the reaction.
How is the molar volume of oxygen calculated?
The molar volume of oxygen is calculated by dividing the volume of displaced water (which equals the volume of oxygen) by the number of moles.
How is the percentage error calculated?
The percentage error is determined by comparing the experimental molar volume with the theoretical molar volume.
Lihat lebih banyak ringkasan video
Inspiration and good mood: THAT’S CINEMA! | Agnès Varda | TEDxVeniceBeach
Musda ORARI Jakarta & Pameran Radio - [Metro Pagi Primetime]
"The Art of Seduction" by Robert Greene | Detailed Animated Book Summary
Aquarius: #9 - TOWER - You're inspiring many to do these things ✨️ Keep up the great work!
Aries: #7 - SHADY PEOPLE - U learned a lot about not judging others' knowledge of following the 🐇 !
Capricorn: #1111 - YOU ARE AWAKENING to UR higher self. Here's why keeping UR CUP full is important.
- molar volume
- oxygen
- experimental error
- chemistry
- educational video
- experiment
- reactants
- chemical reaction