GIẢI CHI TIẾT ĐỀ THI THỬ TN THPT MÔN HOÁ 2026 | SỞ GDĐT TUYÊN QUANG LẦN 1| LỚP HOÁ CÔ QUYỀN

DETAILED SOLUTIONS TO THE 2026 HIGH SCHOOL GRADUATION EXAM PRACTICE TEST IN CHEMISTRY | TUYEN QUANG DEPARTMENT OF EDUCATION AND TRAINING, ROUND 1 | TEACHER QUYEN'S CHEMISTRY CLASS 🥰 YOUTH UNION SHIRT https://s.shopee.vn/9fGkSmhbky 🍀 Subscribe to support me: https://www.youtube.com/@lophoacoquye... 🍀 High school exam preparation in Chemistry:    • LUYỆN THI TN THPT MÔN HOÁ   🍀 Link to online test papers (please do them before viewing the solutions): https://azota.vn/de-thi/vxm0ub 🍀 Compilation of 2026 High School Graduation Exam Practice Tests in Chemistry from the Department and Schools (updated to the exam date): https://docs.google.com/spreadsheets/... 💙 Video Content PART I 00:31 Question 1. Lead-acid batteries are the oldest type of rechargeable battery, operating on the same principle as electrochemical batteries. The anode is made from PbO₂ and the cathode is made from porous pure Pb, both electrodes are immersed in a 38% H₂SO₄ solution. 02:04 Question 2. Which of the following statements is true about carbohydrates? 03:09 Question 3. The chemical equation for the hydrolysis of 2-bromo-2-methylpropane in NaOH solution. 04:30 Question 4. The molecular formula of methane. 04:39 Question 5. Given the following series of metals arranged in decreasing order of reducing power: Na, Mg, Al, Fe. In the following redox pairs, which pair has the largest standard electrode potential value? 05:06 Question 6. Molecular formula of methanol 05:21 Question 7. When a piece of damp litmus paper is placed in a container of NH₃ gas, the litmus paper changes color to 05:44 Question 8. In the ground state, the electron configuration of the Cl atom 06:02 Question 9. Salbutamol is a banned substance often abused in pig farming to increase lean meat ratio. Its residue in food can affect human health. 08:13 Question 10. “...(1)...” are chemically synthesized substances that have a washing effect like soap but are not sodium or potassium salts of fatty acids. 08:27 Question 11. Which of the following molecules has 2 amino groups (–NH₂) and 1 carboxyl group (–COOH)? 08:42 Question 12. Given the equilibrium: 2SO₂(g) + O₂(g) ⇌ 2SO₃(g) The chemical equilibrium of the above reaction will shift to the right when 09:33 Question 13. Given the thermochemical equation: H₂(g) + 1/2 O₂(g) → H₂O(l) Under standard conditions, when H₂(g) reacts completely with 4.958 L O₂(g) then reacts 10:50 Question 14. Methyl salicylate (C₈H₈O₃) used as an analgesic is prepared from salicylic acid 12:33 Question 15. Which of the following statements is correct? 15:02 Question 16. Brass is an alloy of approximately 70% copper and 30% zinc. This alloy dissolves completely in which of the following solutions? 15:38 Question 17. Consider the following statements about the production and application of zinc: In zinc plating to prevent steel corrosion, zinc is a surface protection layer, and also provides electrochemical protection for the steel. 17:33 Question 18. Which metal separation method was used in step 3 of the diagram above? PART II 17:46 Question 1. Student A is assigned the task of researching metal corrosion and metal protection. 19:48 Question 2. A group of students researched the process of refining crude copper (containing x%) by electrolysis and hypothesized that the mass of the crude copper sample decreases by the mass of the cathode increasing. 24:36 Question 3. Aspirin (or acetylsalicylic acid) is a derivative of salicylic acid used to reduce fever and relieve pain. 28:49 Question 4. Plastic is a type of material with many applications in life. Below are bottles or plastic items that often have numerical symbols. PART III 30:44 Question 1. Complete hydrolysis of tripeptide X yields two amino acids, gly and ala. On the other hand, incomplete hydrolysis of X yields the dipeptide ala-gly. What is the maximum number of possible structural formulas of tripeptide X? 31:52 Question 2. Given the chemical equations of the reactions numbered from 1 to 4 below: Assign the chemical equations of the reactions in order of their names: Reaction with Tollens' reagent, acid-base reaction, esterification reaction, iodoform formation reaction and arrange them in increasing order of four numbers. 32:56 Question 3. In the wastewater of a factory, the ammonium ion content is 192 mg/L. To treat ammonium ions to a permissible concentration not exceeding 5 mg/L. Calculate the minimum mass of NaHCO₃ needed to treat 1000 m³ of wastewater. 37:39 Question 4. When butane is mixed with chlorine in a 1:1 molar ratio and exposed to ultraviolet light, what is the maximum number of structural isomers that can be obtained? 38:38 Question 5. One type of self-heating coffee has a heating element consisting of a pouch containing a liquid of sodium hydroxide and m grams of calcium oxide. Thanks to this, 210 mL of coffee in the can is heated by approximately 40°...