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...
To solve the problem of what happens when dilute hydrochloric acid is added to zinc hydroxide, we can follow these steps:Step 1: Identify the Reactants The reactants in this reaction are: - Zinc hydroxide (Zn(OH)₂), which is
Hydrochloric acid is used in the pre-plating treatment to remove oxide films from metal surfaces. However, during its usage, the volatilization of hydrochloric acid, carry-over of the pickling solution by parts, liquid leakage, and disposal of the pickling solution introduce chlorine ions into the...
To prepare hydrogen gas using the metal zinc and an acid, we can follow these steps: 1. Identify the Reactants: - The metal we are using is zinc (Zn). - The acid we will use is hydrochloric acid (HCl).2. Understand the Reaction: - When zinc reacts with hydrochloric acid, it pro...
aadded during 20 minutes to concentrated hydrochloric acid (80 ml.) and water (20 ml.) containingamalgamated zinc (80 g.), and the reaction completed by heating the mixture under reflux for 10 minutes.The hot liquid was then decanted, the residual amalgam was washed with hot methanol (100...
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...