To determine which metal does not form a nitrate when heated with concentrated nitric acid (HNO3), we will analyze the reactions of each metal listed: zinc, magnesium, tin, and lead.1. Identify the Metals: The metals given in t
Instead, it continues to react without forming a protective layer. 5. Conclusion: - The metals that become passive with concentrated HNO3 are chromium and aluminum. Therefore, the correct answer is option 4, which states that both chromium (1st option) and aluminum (3rd option) become passive....
Metallurgy is the practice of obtaining metals. It is done by sequential steps from their ores and altering them for various applications. It deals with the chemical, structural and physical properties of metals, as well as the concepts of ...
An oxide is a compound of an element that is formed when a substance or an element (metal, non-metal, or metalloid) combines with the oxygen atom(s) upon reaction with oxygen in a fixed ratio. Answer and Explanation: The correct option is (e) B...
Salts of 1-10C aliphatic mono- or di-carboxylic acids with metals of normal potential >=0.5V are prepd by reactn. of the metal with the acid, opt. with water in the presence of 0.1-10% nitrate ions in the media. The process partic. for 1-4C acids is pref. carried out at 50-...
Titanium and zirconium oxide cluster anions with dimensions up to nanosize are prepared by laser ablation and reacted with carbon monoxide in a fast low re... JB Ma,X Bo,JH Meng,... - 《Journal of the American Chemical Society》 被引量: 65发表: 2013年 Role of electrolyte composition on...
When a metal part reacts with its external environment and therefore vulnerable to corrosion, it is most commonly contaminated with free iron, and is said to be “active.” Passivation is the process of returning the metal part to its uncontaminated, passive, ...
MBD-MATERIALS: METALS AND NON-METALS-EXAMPLE Red colour makes the solution of litmus blue because of : 02:12 Non-metal on the base of hardness is: 01:25 Which of the following gas is released when a metal react with acids? 01:13 The protety due to which metals can be beaten into ...
Amphoterism refers to the acid and base reactivity of a single substance. In the presence of an acid, the substance will act as a base, while in the presence of a base, it will assume the action of an acid. A famous example of an amphoteric substance...
Where the compounds of this invention are used in photographic elements, they generally have a rate of release of the photographically useful group which is slower than the rate at which they react with oxidized silver halide developing agent, but faster than the rate of fog formation in the un...