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why lye and aluminum shouldn't be mixed?
- Under normal circumstances, aluminum does not react with water, as an impermeable protective layer composed of aluminum hydroxide either forms within seconds or is already in place. With the addition of sodium hydroxide, the formation of a protective layer is prevented. With the production of aluminates [ Al(OH)4 ]-, the amphoteric (capable of acting as either an acid or a base) aluminum hydroxide Al(OH)3 goes in solution: 2 Al + 6 H2O -- 2 Al(OH)3 + 3 H2 Al(OH)3 + NaOH -- Na+ + [ Al(OH)4 ]- A layer of aluminum oxide previously formed by passive corrosion is dissolved by the addition of sodium hydroxide. For this reason, the reaction takes place at the beginning relatively slowly: Al2O3 + 2 NaOH + 3 H2O -- 2 Na+ + 2 [ Al(OH)4 ]- The aluminum completely dissolves and the water acts here too as an acid (for an analog, see Experiment 4.4.1). This reaction is used in drain cleaners. They are mostly made out of strong alkalis, to which alumunim or zinc has been added. The alkalis break down organic residues chemically. In addition, the formation of hydrogen leads to a bubbling effect which adds an additional mechanical cleaning mechanism. The big problem here is the formation of hydrogen gas (as well as some heat). The hydrogen gas is flammable, and if it's in a closed container, will explodes
Raw Aluminum Protection?
- in case you have coverage or can cope with to pay for to - flow see an Ear nostril Throat wellbeing care professional (additionally spoke of as otolaryngologist or ENT for short) it incredibly is the main secure and smartest element to do. maximum probable he will prescribe an ear flush for you that works o.k.. additionally, listening to in triplicate may well be a symptom of nerve inflammtion or different ailment which will properly be examined for quite truthfully by potential of a doctor. Odds are this is not something, yet extra effective risk-free than sorry.s
Bauxite ore contains aluminum oxide...........?
- That's a good question, I was wondering the same thing myselfs
Aluminum Cookware and Acidic Foods?
- tastes like metal use wood if in doubts
Why is aluminium not extracted from aluminium oxide?
- Well, de facto because the heat of formation of aluminum oxide is so much greater than the heat of formation of iron oxide. If you're looking for something more mechanistic, find Al and Fe in the periodic table. Al and Fe are in different rows, and Fe is larger than Al, so although Al+3 and Fe+3 have the same charge, oxygen bonds less strongly to Fe+3 than to Al+3 because it's further away from the nucleus of Fe. Al+3 has no outer shell electrons at all; 3s, 3p, and 3d subshells are all empty. It's effectively a charged sphere with nothing to interfere with bonding. Fe+3 (as in hematite, Fe2O3) is larger, has filled 3s and 3p subshells, and a half-filled 3d subshell. That 3d electron density projects pretty far out into space, holding oxygen at arms length. Aluminum has no electron density in 3d orbitals, so oxygen can tuck in nice and tight and get a good grip. Any of these hit the mark? I don't know what background you're bringing to this question.s
Aluminum and its compounds?
- 1) Aluminum forms a natural oxide coating in air that is very unreactive, so when you put it from air into water, nothing happens. 2) Mercury chloride reacts with the aluminum to form an amalgam (mercury-aluminum alloy) and is very reactive. 3) Amphoteric behavior 4) No idea. Check you textbook or class notes. 5) No idea. 6) To form aluminum sulfates
Has anyone heard of Lydney Aluminum?
- lydney appears to be a place in england. they probably get their aluminium there.s
iron rust but not aluminium? 10 points.?
- Aluminum and Iron both form an oxide coating on the surface of the pure metal. Iron oxide and aluminum oxide are very different however. Rust is very soft and wears away quickly, exposing a fresh Iron surface. Aluminum oxide is what a ruby is made from (along with a little Chromium for color). Rubies are only a bit softer than diamonds, the hardest substance known. The oxide coat on Aluminum is very thin but also very hard. It adheres to the surface and prevents any further corrosion. Regarding Chromium, it is the key ingredient in stainless steel. Steel is an Iron alloy with a small amount of Nickel, Molybdnium, Vanadium and even Copper and Phosphorus. Stainless steel resists rust so well because the Chromium will form an oxide coating the same way Aluminum does. Since the Chromium is actually part of the alloy, if the stainless steel is scratched, the fresh surface soon coats with a protective layer of Chromium oxide.s
Brief Introduction of Aluminium Coil
- Aluminium coil is rolled after casting in a machine, pulled or bent in the process for metal products.Aluminium coil is widely used in electronics, packaging, construction and mach...
Main Chatacters of Aluminum Foil Pans
- Aluminium plate is a more widely used in tableware. The thickness of the foil container is generally between 0.04mm ~ 0.20mm, it can be divided into two kinds of wrinkle wrinkle-fr...
The Application of Aluminium Panel
- Aluminium veneer is the application of an external coating or other treatment to the aluminium product to improve its resistance to certain conditions, such as weather or to enhanc...
Corrugated Aluminum Sheet
- The features of corrugated aluminum sheet is light weight (only steel 3/10), silver white and other colors, both decorative effect, but also a strong ability to reflect sunlight. I...
Reasons to Avoid a Polypropylene Rug?
- Wearability. Although polypropylene is a tough, hard wearing material it does not have the same life expectancy as wool, you can expect a decent wool carpet to last around 30 year,...