Persamaa Reaksi Kimia - IPA ( Kimia ) SMA Kelas X / Fase E - Kurikulum merdeka

Summary

This video lesson covers the process of writing chemical reaction equations, designed for 10th-grade students following the Merdeka curriculum in Indonesia. The instructor, Bapak Bambang Aceh, demonstrates how to write balanced chemical equations, starting with simple reactions like the combustion of carbon and the decomposition of ammonium chloride. Various examples, such as reactions involving copper oxide, mercury oxide, and acids, are provided to illustrate different types of chemical changes. The importance of understanding chemical formulas and reactions is emphasized, and the video encourages students to always pray before learning.

Takeaways

• 😀 Always start learning with a prayer, as mentioned in the video script.
• 😀 The importance of understanding the rules of compound naming (nomenclature) before working with chemical reactions.
• 😀 The chemical reaction for burning carbon (charcoal) is C (solid) + O2 (gas) → CO2 (gas).
• 😀 The decomposition of ammonium chloride produces ammonia gas (NH3) and hydrogen chloride gas (HCl). The reaction is NH4Cl (gas) → NH3 (gas) + HCl (gas).
• 😀 Copper(II) oxide reacts with hydrochloric acid to form copper(II) chloride (CuCl2) and water (H2O). The equation is CuO + 2HCl → CuCl2 + H2O.
• 😀 The decomposition of mercury(II) oxide produces mercury and oxygen gas. The reaction is 2HgO → 2Hg + O2.
• 😀 When iron reacts with sulfuric acid, iron(II) sulfate and hydrogen gas are produced. The equation is Fe + H2SO4 → FeSO4 + H2.
• 😀 The reaction of calcium carbonate (marble) with hydrochloric acid forms calcium chloride, carbon dioxide gas, and water. The equation is CaCO3 + 2HCl → CaCl2 + CO2 + H2O.
• 😀 The combustion of LPG (liquefied petroleum gas, primarily butane) produces carbon dioxide and water vapor.
• 😀 The video emphasizes the importance of understanding the basics of chemical reactions to better tackle more complex problems.
• 😀 The script provides a range of practice problems to write balanced chemical equations for various reactions, helping reinforce learning.

Q & A

What is the main topic discussed in the video?

The video focuses on writing chemical equations for various reactions, specifically designed for high school chemistry students in Indonesia.

Why is it important to pray before studying, as mentioned in the video?

The speaker emphasizes the importance of prayer before studying to seek blessings and focus during the learning process.

What is the chemical equation for the combustion of carbon?

The combustion of carbon (charcoal) in oxygen results in carbon dioxide, and the equation is: C (solid) + O2 (gas) → CO2 (gas).

What is the chemical reaction for the decomposition of ammonium chloride?

When ammonium chloride vapor decomposes, it produces ammonia gas and hydrogen chloride gas. The equation is: NH4Cl (gas) → NH3 (gas) + HCl (gas).

What happens when copper(II) oxide reacts with hydrochloric acid?

When copper(II) oxide reacts with hydrochloric acid, copper(II) chloride and water are formed. The equation is: CuO (solid) + 2HCl (aq) → CuCl2 (aq) + H2O (l).

What is the chemical equation for the decomposition of mercury(II) oxide?

Upon heating, mercury(II) oxide decomposes to form mercury and oxygen gas. The equation is: 2HgO (solid) → 2Hg (liquid) + O2 (gas).

What is the result of the reaction between iron and sulfuric acid?

When iron reacts with sulfuric acid, iron(II) sulfate and hydrogen gas are produced. The equation is: Fe (solid) + H2SO4 (aq) → FeSO4 (aq) + H2 (gas).

What is the chemical equation for the reaction between marble (calcium carbonate) and hydrochloric acid?

The reaction between calcium carbonate and hydrochloric acid produces calcium chloride, carbon dioxide, and water. The equation is: CaCO3 (solid) + 2HCl (aq) → CaCl2 (aq) + CO2 (gas) + H2O (l).

What happens when butane gas undergoes complete combustion?

The complete combustion of butane gas results in the production of carbon dioxide and water vapor. The equation is: 2C4H10 (gas) + 13O2 (gas) → 8CO2 (gas) + 10H2O (gas).

How can calcium phosphate and water be created, as discussed in the video?

The video mentions that calcium phosphate and water can be formed by reacting calcium oxide with calcium hydroxide. The process is outlined but not shown with a specific chemical equation.