Hydrochloric acid is the reducing agent C. Zinc is oxidized D. Hydrogen in hydrochloric acid is oxidized 相关知识点: 试题来源: 解析 C。解析:反应方程式为Zn + 2HCl = ZnCl₂+ H₂↑。锌的化合价从0升高到 + 2,根据氧化还原反应电子转移的本质,化合价升高的锌失去电子被氧化。反馈 收藏 ...
The influence of CnTAB cationic surfactant chain length (n = 8, 10, and 12) on the reaction rate of zinc powder and 0.1 M HCl hydrochloric acid in aqueous solutions was determined at room temperature. Solutions of single surfactants consisting of dodecyl, decyl, and octyl鈥恡rimethyl銈沵...
34 Hydrochloric acid reacts with zinc.2HCl(aq)+Zn(s)→2nCl_2(aq)↓+H_2(g)What will increase the rate of this reaction but will not change the Boltzmann distribution of molecular energies? B1 addition of a suitable catalyst2 an increase in concentration of hydrochloric acid3 an increase ...
The corrosion of zinc in an oxygenated hydrochloric acid electrolyteillustrates the effect of multiple cathodic reactions. Whatever the cathodic reaction, the anodic reaction is always the oxidation of zinc: Zn -> Zn2++ 2e. Zinc is a metallic conductor and electronic transfer to its cathodic regio...
hydrochloric acid (Low Hazard at this concentration) or sulfuric acid (Irritant at this concentration) Technical notes Solid iodine (Harmful, Dangerous for the Environment) Refer to CLEAPSS® Hazcard 54A Zinc powder (Highly Flammable, Contact with water can also release a ammable gas, Dange...
take 1.5g of this product, add 50ml of water and 10ml of hydrochloric acid, boil, filter with wet filter paper while hot, and wash with hot water until the wash solution does not show acidic reaction; Combine filtrate and wash solution, put it in a 200ml measuring flask, add ammonia so...
Zn(OH)2→ZnO+H2O (2) Basic zinc carbonate calcination method: production methods of active zinc oxide are more, Most of the low-grade zinc oxide or zinc ore as raw materials, and reaction with dilute sulfuric acid solution, made of zinc sulfate solution, the solution heated to 80~90 ℃...
Why does the reaction of 2-bromo-2-methylbutane and ethanolic solution of silver nitrate interfered by the presence of water in the sodium iodide in acetone reagent? In laboratory, the preparation of hydrogen gas, hydrochloric acid is mainly used to react with z...
synthetic sodium cyanide is dissolved in water, and barium chloride is added to remove sodium carbonate impurities; Zinc chloride is dissolved in water, if the solution is turbid, hydrochloric acid is added, and the pH value of 5~6 is adjusted to convert Zn0 into ZIICl2 in the solution. ...
Anhydrous and hydrated forms exist for zinc chloride. By using a chemical reaction, zinc chloride can be obtained through the reaction of zinc carbonate, zinc oxide,zinc sulphide, or zinc metal with hydrochloric acid Dissolution Zinc with a zinc content of approximately 99.5% is fused into liquid...