In terms of chemistry, how does bleach work ?
A bleach is a chemical that can remove or lighten color, usually via oxidation. An oxidizing bleach works by breaking the chemical bonds of a chromophore (part of a molecule that has colour). This changes the molecule so that it either has no colour or else reflects colour outside the visible spectrum. A reducing bleach works by changing the double bonds of a chromophore into single bonds. This alters the optical properties of the molecule, making it colourless. In addition to chemicals, energy can disrupt chemical bonds to bleach out colour. For example, the high energy photons in sunlight (e.g., ultraviolet rays) can disrupt the bonds in chromophores to decolorize them.
What is a bleaching agent and an oxidizing agent in bleaching powder, a nascent oxygen, hypochlorite ion, or chlorine, and how?
Thanks for A2A.The common bleaching powder is made of a combination of Calcium Hypochlorite (Ca(ClO)2), Calcium Hydroxide (Ca(OH)2) and Calcium Chloride (CaCl2). Among which the recognized important agent is the Calcium Hypochlorite.This type of bleach is considered a Chlorine-based type of bleaching agent. (there are other bleaching agents that are Peroxide-based).Chlorine is thought to attack and break the bonds in chromophores causing them to lose the ability to absorb the visible lights.
Why hydrogen peroxide is used as a bleaching agent?
All peroxy compounds are unstable so this H2O2 has peroxy linkage which makes it unstableH2O2 gives H2O and nascent oxygen(O)..and this nascent oxygen(O) is responsible for bleachingBleaching is same as oxidation
Why does bleach turn things white?
Bleach means removal of any color and stain means quality of a color..which is probably un wanted.An equation can be made with a “potted plant” and a “weed”.A weed is also a plant which is not b needed by the person who wants to plant another one in the plant-pot.A bleach has no means to select what you need and what you do not need, but just removes color and the result/residue is the basic color of the fabric. If the cloth was dyed with a color which will not be affected by one type of bleach, after bleaching that color will remain.That is why when the “stain” comprises of gravy containing many dyes, at times after bleach retains some color which was not visible/conspicuous there initially.Bleaching can be done by many methods!! But for the question the chemistry is not the criteria!
How does hydrogen peroxide lighten your skin?
Hydrogen peroxide is an oxidizing agent commonly used as a bleach or whitening ingredient in various household products. Hydrogen peroxide is used for teeth whitening, nail brightening, and hair lightening and antiseptic. Hydrogen peroxide is perfect in the removal of acne scars, age spots, discoloration and most deadly skin blemishes.When hydrogen peroxide comes into contact with your skin, you will notice that the area of contact becomes whiter. This is observed when you apply it on a wound. Perhaps this is what fascinated many people to think of lightening the skin using it.But the truth of the matter is that it is difficult to attain permanent skin whitening using hydrogen peroxide. Studies reveal that when hydrogen peroxide comes into contact with your skin, it causes capillary embolism. That is, it prevents blood from flowing to the capillaries at the affected area for some time and that is why your skin will appear light or fair.The Centers for Disease Control and Prevention states that when mild concentrations of hydrogen peroxide come into contact with skin, it can temporarily cause irritation. Heavier concentrations of 10 percent or higher are considered highly corrosive to the skin, which can lead to strong irritation and thermal-type burns.I am here only to be truly helpful. If you have questions contact me.
Why does the color on your clothes change when you put sodium hypo chloprite?
Sodium hypochlorite is the chemical name of an active compound in industrial substances known as bleach. Bleach works as a mild oxidising agent, meaning that it releases oxygen upon a process called redox reaction.Such oxygen molecules released by sodium hypochlorite break up the chemical bonds of special atoms or atom groups in organic compounds that are responsible for colours in clothes. We term these atoms or atom groups as chromophores.When these chemical bonds are broken, the chromophore can no longer pick up solar radiation and transmit it as colour, and that is the reason why the clothes turn either paler or colourless.
Is spilling bleach on jeans a chemical reaction???
Yes it is. "Chemical bleaches work in one of two ways: * An oxidizing bleach works by breaking the chemical bonds that make up the chromophore (the molecules that give a material its colour). This changes the molecule into a different substance that either does not contain a chromophore, or contains a chromophore that does not absorb visible light. * A reducing bleach works by converting double bonds in the chromophore into single bonds. This eliminates the ability of the chromophore to absorb visible light."