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The reducing agent donates electrons to an oxidant. Reducing elements become positive ions. Most metals are reducing elements.
Sigurd Nolan
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Which of the substances can act both as oxidising and reducing agent?
The terms "reducing agent" and "oxidizing agent" are relative. It seems that you already know this; that depending on the specific reaction, a given compound may be the reducing agent or the oxidizing agent, and in some reactions the same compound is both the oxidizing agent and the reducing agent. It is very important to remember that in an oxidization/reduction reaction, the reducing agent is oxidized and the oxidizing agent is reduced. Examples: 1) Aldehydes are one example of compounds that can act as reducing agents or oxidizing agents. As reducing agents, aldehydes can reduce Ag(I) in the form of [Ag(NH3)2]+ OH- to Ag metal. They can also reduce Cr(VI) to Cr(III) and Cu(II) to Cu(I). In each case, the aldehyde is oxidized to its corresponding carboxylic acid. As oxidizing agents, aldehydes (and ketones) can oxidize a hydride (H-) in sodium borohydride or lithium aluminumhydride to H+ as the aldehyde (or ketone) is reduced to an alcohol. Aldehydes and ketones are often used to form carbon-carbon bonds in aldol condensation reactions where a carbanion or an enolate ion attacks the carbonyl carbon of the aldehyde or ketone. In these reactions, the aldehyde or ketone is also reduced to an alcohol. 2) The nitrite anion is another example of a species that can serve as an oxidizing agent or a reducing agent in many reactions. Nitrite (formal charge of N+3) is readily oxidized to nitrate (formal charge of N+5) by the permanganate anion or it can be reduced all the way to ammonia (formal charge of N-3) by hydrogen sulfide. That's an impressive difference of six in the respective nitrogen oxidation states. Like aldehydes and ketones, nitrite can oxidize hydride to H+ in certain borohydride compounds in which nitrite is reduced to N2O, also known as laughing gas.
What determines if an agent can act as an oxidizing agent or a reducing agent?
Oxidants (oxidizing agents) are capable of taking up electrons. The strongest oxidant elements are found in the upper-right corner of the periodic table (O, F, Cl), except the noble gases (group 18).Reductant donate electons, the strongest elemental reductants are 'left and low' in the periodic table (Cs, Ba, Rb), except Li (left-high) which is exceptionally the strongest.Ox + e- --> R-Red --> O+ + e-Together:Ox + Red --> O+R-
How do hexoses affect alkaline copper complex ions?
Sugars containing the aldo or the keto group are capable of reducing copper in alkaline solutions (Fehling's solution) to produce the brick-red colouration of cuprous ions. These sugars are called reducing sugars and the reaction, although not specific for reducing sugars, has use for both qualitative and quantitative determinations.
What is used to test for reducing and oxidising agents?
When some substances are oxidised or reduced, there is a colour change.Testing for a reducing agent:An oxidising agent is a substance that causes another substance to be oxidised & is itself reduced. Acidified potassium manganate (VII) is an example of one. While it oxidises other substances, the manganate ion is reduced (because the oxidation state decreases showing that reduction is occuring) :MnO4- --> Mn2+oxdations state:+VII+2colour:PinkColourlessSo, to see if an unknown substance is a reducing agent, add acidifies potassium manganate (VII) to see if the pink colour fades. If it does, you know the unknown substance was a reducing agent, because it caused reduction.Testing for an oxidising agent:A reducing agent is a substance which causes reduction, but is oxidised itself. Potassium iodide is a powerful reducing agent. While it reduces other substances, the iodide ion is oxidised (because the oxidising state increases) resulting in a colour change:2I- -->I2Oxidising state:-10 (the oxidising state of a diatomic molecule is 0)Colour:ColourlessRed-brownSo, to see if an unknown substance is an oxidising agent, add potassium iodide to see if a red-brown colour appears. If it does, you know your unknown substance is an oxidising agent because it caused a reduction
What best describes sulfur?
Sulphur is a yellow non-metallic element which is solid at room temperature and insoluble in water. Sulphur will burn in air with a blue flame and the release of a pungent choking gas called Sulphur Dioxide. Sulphur will melt at around 115 degrees Celsius and boil at around 445 degrees Celsius. When heated to melting point, Sulphur initially becomes a red liquid but this changes to a black color with prolonged heating. Chemically, Sulphur may act as an oxidizing agent or a reducing agent.
What is reaction of hexoses?
Hexoses, which are either aldoses or ketoses, show reducing properties. This reducing property is the basis of the test for sugar in the urine and in the blood. When reducing agent is treated with an oxidizing agent such as Cu2+ complex ion,+ a red-orange precipitate of copper(I) oxide (Cu2O) is formed. The unbalanced equation for the reaction of an aldehyde with Copper (II) complex ion can be written as follow: aldehyde + Cu2+ heat NAOH
What research has been done on red yeast rice extract?
research indicates red yeast rice may contain other cholesterol-reducing and be itself an agent useful in lowering cholesterol.
Which of the substances can act both as oxidising and reducing agent?
The terms "reducing agent" and "oxidizing agent" are relative. It seems that you already know this; that depending on the specific reaction, a given compound may be the reducing agent or the oxidizing agent, and in some reactions the same compound is both the oxidizing agent and the reducing agent. It is very important to remember that in an oxidization/reduction reaction, the reducing agent is oxidized and the oxidizing agent is reduced. Examples: 1) Aldehydes are one example of compounds that can act as reducing agents or oxidizing agents. As reducing agents, aldehydes can reduce Ag(I) in the form of [Ag(NH3)2]+ OH- to Ag metal. They can also reduce Cr(VI) to Cr(III) and Cu(II) to Cu(I). In each case, the aldehyde is oxidized to its corresponding carboxylic acid. As oxidizing agents, aldehydes (and ketones) can oxidize a hydride (H-) in sodium borohydride or lithium aluminumhydride to H+ as the aldehyde (or ketone) is reduced to an alcohol. Aldehydes and ketones are often used to form carbon-carbon bonds in aldol condensation reactions where a carbanion or an enolate ion attacks the carbonyl carbon of the aldehyde or ketone. In these reactions, the aldehyde or ketone is also reduced to an alcohol. 2) The nitrite anion is another example of a species that can serve as an oxidizing agent or a reducing agent in many reactions. Nitrite (formal charge of N+3) is readily oxidized to nitrate (formal charge of N+5) by the permanganate anion or it can be reduced all the way to ammonia (formal charge of N-3) by hydrogen sulfide. That's an impressive difference of six in the respective nitrogen oxidation states. Like aldehydes and ketones, nitrite can oxidize hydride to H+ in certain borohydride compounds in which nitrite is reduced to N2O, also known as laughing gas.
What do red boxes mean in a chemical equation?
There is no specific meaning for this. It would normally be used to draw attention to particular parts of the system. The author should explain what it's being used for. One example might be 'Is the substance in the red box an oxidising agent, reducing agent or neither?'
What determines if an agent can act as an oxidizing agent or a reducing agent?
Oxidants (oxidizing agents) are capable of taking up electrons. The strongest oxidant elements are found in the upper-right corner of the periodic table (O, F, Cl), except the noble gases (group 18).Reductant donate electons, the strongest elemental reductants are 'left and low' in the periodic table (Cs, Ba, Rb), except Li (left-high) which is exceptionally the strongest.Ox + e- --> R-Red --> O+ + e-Together:Ox + Red --> O+R-
What is the duration of Agent Red?
The duration of Agent Red is 1.58 hours.
When was Agent Red created?
Agent Red was created on 2000-12-27.
How do hexoses affect alkaline copper complex ions?
Sugars containing the aldo or the keto group are capable of reducing copper in alkaline solutions (Fehling's solution) to produce the brick-red colouration of cuprous ions. These sugars are called reducing sugars and the reaction, although not specific for reducing sugars, has use for both qualitative and quantitative determinations.
Which element is a solid and forms rust when reacted with air?
The element is iron.Rust is a general term for a series of iron oxides, usually red oxides, formed by the reaction of iron and oxygen in the presence of water or air moisture.
What is a reaction called when it goes red?
A red colored reaction can mean the reaction is serious. When your skin becomes dark red you should seek medical help.
What is used to test for reducing and oxidising agents?
When some substances are oxidised or reduced, there is a colour change.Testing for a reducing agent:An oxidising agent is a substance that causes another substance to be oxidised & is itself reduced. Acidified potassium manganate (VII) is an example of one. While it oxidises other substances, the manganate ion is reduced (because the oxidation state decreases showing that reduction is occuring) :MnO4- --> Mn2+oxdations state:+VII+2colour:PinkColourlessSo, to see if an unknown substance is a reducing agent, add acidifies potassium manganate (VII) to see if the pink colour fades. If it does, you know the unknown substance was a reducing agent, because it caused reduction.Testing for an oxidising agent:A reducing agent is a substance which causes reduction, but is oxidised itself. Potassium iodide is a powerful reducing agent. While it reduces other substances, the iodide ion is oxidised (because the oxidising state increases) resulting in a colour change:2I- -->I2Oxidising state:-10 (the oxidising state of a diatomic molecule is 0)Colour:ColourlessRed-brownSo, to see if an unknown substance is an oxidising agent, add potassium iodide to see if a red-brown colour appears. If it does, you know your unknown substance is an oxidising agent because it caused a reduction
Why does an element give off light of a particular colorwhen flame test is being conducted?
This is because each element has different photons (bundles of light) it gives off during reaction or energy transfer. For example, lithium has primarily red photons, so you see a lithium flame as red.
