-
It is not possible to happen at the same time, the metathesis reaction has no valency change, whereas the redox reaction has a certain change in valency, so it cannot happen at the same time.
-
You're asking the wrong question. Metathesis includes many reactions, including redox reactions.
-
Metathesis reaction is not a redox reaction.
So all metathesis reactions are not redox reactions because the chemical equation of metathesis reactions. The valency of the same element of reactants and products remains unchanged, so the metathesis reaction is not a redox reaction, such as: 1. Na2CO3 2HCl=2NaCl CO2.
In this reaction in 1 above, the valencies of Na, C and O in Na2CO3 in the reactant are 1, 4 and 2 respectively, the valency of H and Cl in HCL is 1 and 1 respectively, and the valency of NaCl, CO2 in the product and Na, Cl, C, O and H in H2O are 1, 1, 4, 2 and 1 respectively.
The valency of the same element on the left and right of the equation does not change, which is a metathesis reaction, not a redox reaction. The valencies of Ca(HCO3)2 in 2 and Ca, H, C, O, and Cl in HCL are 2, 1, 4, 2, and 1, respectively.
The valencies of Ca, Cl, C, O, and H in CaCl2, Co2, and H2O in the products are 2, 1, 4, 2, and 1, respectively, and the valency of the same element does not change around the equation, which is a metathesis reaction, not a redox reaction.
Redox reaction: Step-by-step oxidation occurs when reacting with an oxidant, which is essentially the gain or loss of electrons or the shift of shared electron pairs. For example:
h2+cl2=2hcl。Hydrogen is oxidized from 0 valence to +1 valence, and chlorine is reduced from 0 valence to -1 valence. So this is a redox reaction.
-
False, the metathesis reaction must not be a redox reaction. There is no change in the valency of any element in the metathesis reaction, and there must be a change in the valency of one or more elements in the redox reaction.
-
Summary. <>
Dear, I'm glad to answer your <>
The reason why the redox reaction of oxygen reduction and metathesis takes precedence is that redox reactions are usually associated with electron transfer, where one species loses electrons and the other gains electrons. In this case, the reaction either releases energy or absorbs energy, which is known as a redox reaction. The oxygen atom has a strong electron affinity, so the oxygen molecule usually has a high redox capacity.
For example, in an oxygen reduction reaction, oxygen can receive electrons from water molecules, which then form hydroxide ions and hydrogen ions. At the same time, the reducing agent loses electrons in the reaction and becomes more cationic<>
<> oxygen also reacts with metathesis of why redox is preferred.
Dear, I'm glad to answer your <>
The reason why the redox reaction of oxygen reduction and metathesis takes precedence is that redox reactions are usually associated with electron transfer, where one species loses electrons and the other gains electrons. In this case, the reaction either releases energy or absorbs energy, which is known as a redox reaction. The oxygen atom has a strong affinity for the electro-detector, so the oxygen molecule usually has a high redox capacity.
For example, in an oxygen reduction reaction, oxygen can receive electrons from water molecules, which then form hydroxide ions and hydrogen ions. At the same time, the reducing agent loses electrons in the reactive sparrow leaky rock and becomes more cationic<>
<> kiss, expand as follows <>
Metathesis is a type of reaction in which one of the compounds is broken down into two or more other compounds and there is no electron transfer in the reaction. As a result, metathesis usually does not involve electron exchange and produces less energy than redox reactions. Because redox reactions have a higher energy production, they usually take precedence over metathesis reactions<>
Fresh spring branch flowers] <>
Freshly cracked knurling] <>
Why is it neutralized and then precipitated during metathesis reaction?
The reason for the first neutralization and then precipitation during the metathesis reaction is: 1The neutralization reaction reduces the concentration of ions, which helps to control the amount of precipitate generated. 2.
Neutralization can adjust the pH value of the dissolution and dismantling shirt solution, so that the rate of the reaction is more appropriate, thereby improving the reaction efficiency. 3.In some cases, failure to carry out the neutralization reaction will lead to the adsorption of other substances formed in the reaction and ions, which will affect the formation of precipitation.
Therefore, in metathesis reactions, a neutralization reaction is usually carried out first, and then reactants are gradually added to form a precipitate<>
<> travel cavity. How to push the chemical product of acidified ferrous sulfate solution mixed with a small amount of hydrogen peroxide?
When the acidified ferrous sulfate is dissolved or mixed with hydrogen peroxide, a displacement reaction will occur to generate oxygen and iron ions: FeSO4 + H2O2 + H2SO4 Fe3+ +SO4 2- +H2O + O2 where FeSO4 represents the acidified sulfate hole early iron solution, H2O2 represents hydrogen peroxide, and H2SO4 represents sulfuric acid. The products are Fe3+, SO4 2-, H2O and O2.
-
One becomes more decomposition; Changeable one is compounded; The reaction of two salts produces two new salts, but the exchange of anions and cations is called metathesis; There is a change in valency for redox; The acid-base reaction is called neutralization, and the generation of a new element and compound is called displacement.
-
The decomposition reaction may be redox, such as hydrogen peroxide decomposition, in this reaction the oxidant and the reducing agent are both hydrogen peroxide, hydrogen is obtained by decreasing the valency, which is the reduction product, and oxygen is obtained by increasing the valency, which is the oxidation product, this example tells us that the oxidant and the reducing agent may be the same substance, and in the same way, in the chemical reaction, the oxidation product and the reduction product can also be the same substance.
Decomposition reactions may also not be redox, such as the decomposition of calcium carbonate.
The key is to see whether the valency rises and falls, and whether the electrons have gains and losses and shifts.
Hope to be able to help you, thank you.
-
Both decomposition and synthesis can be redox reactions.
For example, 2kClO3=2kCl+3O2
-
It may be, but not necessarily, it becomes 0, and the increased chemical valence is oxidized and the lower is reduced.
Hydrogen peroxide splits into water and oxygen is.
Carbonic acid decomposes into carbon dioxide and water is not.
-
Possibly2H2O2=2H2O+O2 The oxygen in the water is reduced, and the oxygen in the oxygen is oxidized.
CaCO3 = high temperature = Cao + CO2 is not oxygen also reaction.
-
Because redox reaction refers to a reaction with electron gain and loss (or electron transfer). That is to say, to participate in the chemical college.
The substance of the reaction belongs to the reaction of an element before and after the reaction, and the valency has changed).
The metathesis reaction is carried out in solution, the ions exchange components with each other, and there is no change in the valency of the elements in the substance before and after the reaction, or there is no electron gain or loss or transfer. So the metathesis reaction is not a redox reaction.
-
The redox reaction is essentially the transfer of electrons (characterized by a rise and fall in valence before and after the reaction).
The metathesis reaction is essentially the exchange and binding of anion and cation ions (there is absolutely no change in valency before and after the reaction).
Therefore, there is another conclusion: the redox reaction in the chemical reaction has nothing to do with the metathesis reaction.
-
Because there is no electron transfer in the metathesis reaction, i.e., there is no valency rise and fall.
Simple understanding: the reaction of a substance with oxygen to form an oxide is called an oxidation reaction. >>>More
The neutralization reaction is the combination of H+ ionized by acid and oh- ionized by alkali to produce water. >>>More
pwd=1234 Extraction code: 1234 Introduction: High-quality materials for junior high school chemistry**, suitable for teachers at all stages, daily tutoring for students, sprint for the high school entrance examination, and skill improvement learning.
The salt produced by the reaction of strong acid and strong alkali is neutral (the calcium chloride that the landlord is talking about) The salt produced by the reaction of weak acid and strong alkali is alkaline (such as sodium carbonate), the salt produced by the reaction of strong acid and weak alkali is acidic, and the salt reacts with salt to see the acid group and metal ions, if the acid group is a strong acid group, the metal ion is a weak base, and it is acidic.
The third floor is quite right, this is the knowledge of the university, the occurrence of any reaction, the essence of which is to judge whether the Gibbs function variable g is greater than zero: greater than zero, the reaction cannot be carried out spontaneously, less than zero, the reaction can be carried out spontaneously. >>>More