Metal zinc-aquamarine reaction
The surface of the metal could be dissolved in water to form a zinc-ammine complex ion. Then, the internal metal would be exposed to the surface and react with water to form metal and hydrogen. Since the hydrogen dioxide was dissolved in the water, the reaction continued and hydrogen was released. Finally, the reaction equation was: Mn +4NH2 + 2H2O = (Mn (NH2))(Ox) 2 + H2O. At the same time, when mixed with an alkali-based fertilizer such as hydrogen, it was easy to cause a chemical reaction to reduce the fertilizer efficiency; and the zinc-hydrogen complex ion was (Mn (NH2)) 2. Read more exciting novels for free
Sulfur and zinc-mixed reaction
The reaction of the reaction between the two metals was as follows: Mn + H ^SO2 = Mn ^SO2 + H ^^; the reaction of the reaction between the two metals was as follows: Mn + 2 ^H ^SO2 = Mn ^SO2 + 2 ^H ^O + Mn ^. If there is an excessive amount of copper, it will first occur as: Mn +2H ^SO2 (concentrated)= Mn ^SO2 + Mn ^O, and then as: Mn + H ^SO2 (diluted)= Mn ^SO2 + Mn ^O. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Speed of Iron, Magnesium, and Zinc-Acid
According to the order of metal activity, the activity of titanium, titanium, and iron decreased in turn. When it reacted with sulfuric acid, the reaction rate was from fast to slow: The chemical properties of the reaction between calcium and sulfuric acid were relatively active, and the reaction rate was relatively fast. A large number of bubbles would be produced in a very short time. The reaction between calcium and sulfuric acid was not as intense as that of calcium, but the rate of bubble formation was also relatively fast. The reaction rate of iron and sulfuric acid was relatively slow, and the rate of bubble formation was relatively slow. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction of two metal solutions
The reaction between metal and metal solution belonged to the type of reaction between metal and salt solution. The general reaction formula was: metal + salt solution → new salt + new metal. The reaction conditions were as follows: (1) The mobility of the metals involved in the reaction (except for potassium, calcium, and calcium) was stronger than that of the metal corresponding to the metal ions in the salt;(2) The salt must be water-dissolved. In the reaction between metal ions and solution, there were other types of reactions, such as the precipitations reaction (metal ions and many negative ions can form a difficult-to-dissolve precipitations), the alkali-base reaction (metal ions react with bases in solution, and different metal ions produce different properties of the precipitations. Some precipitations can further react with excessive bases), and so on. For example, in the chemistry review for the middle school entrance examination, it was involved in the reaction of a metal with a variety of salt solutions, such as adding a certain amount of Mn powder to a mixed solution of AI (NO3)3, Cu(NO3)2, and AgNO3. This involved the effect of the metal activity order on the reaction, and thus the composition of the filtered liquid and residue after the reaction. When analyzing the reaction between various metals and acid solutions, the reaction speed could be judged according to the activity of the metal. When the metal of the same mass reacted with a sufficient amount of diluted acid, the amount of hydrogen produced could also be judged according to the relative atomic mass of the metal. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Acid and Metal Reaction Color
Different metals may react with acid to produce different colors: - The reaction between the dilute sulfuric acid and the dilute sulfuric acid produced a large number of bubbles. The chemical equation was: Mn +2HQ = Mn Cl2 + Mn Cl2, Mn + Mn Cl2 = Mn Cl2 + Mn Cl2 + Mn - The reaction between the two metals was intense and produced a large number of bubbles. The chemical equation was as follows: Mn +2HQ = Mn Cl2 + Mn Cl2, Mn + Mn Cl2 = Mn Cl2 + Mn Cl2 + Mn Cl2 = Mn Cl2 + Mn Cl2 = Mn Cl2 + Mn Cl2 + Mn Cl2 = Mn Cl2 + Mn Cl2 = Mn Cl2 + Mn Cl2 + Mn Cl2 = Mn Cl - When iron reacted with diluted sulfuric acid or sulfuric acid, a small amount of bubbles appeared on the surface of the nail. At the same time, the solution turned light green because of the formation of iron sulfuric acid or iron chloride.The reaction equation was: FeCl2 <2>+ H <2>, FeCl2 <2>= FeCl2 <2>+ H <2>, FeCl2 <2>= FeCl2 <2>= FeCl2 <2>+ H <2>. - Copper does not react with dilute sulfuric acid or dilute sulfuric acid. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Alkaline Metal Oxides Deliquescence Reaction
Deliquescence is the phenomenon of certain substances absorbing moisture from the air and becoming moist. For basic metal oxide-like CaCl2, MCl2, and NaCl2, deliquescence occurred. However, there was no specific reaction type called the " delixidation reaction of basic metal oxide'. Using the example of dilute ether, deliquescence was a physical change process. It was a process in which the solid state of dilute ether absorbed the moisture in the air and formed a solution on the surface. No new substance was formed, and the reaction equation did not exist. Similarly, the deliquescence of CaCl2 absorbed moisture from the air and became moist. It was essentially a physical change process. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction of Copper Hydride with Metal Formate
The reaction between the newly made copper trioxides and the methyformate-containing part of the methyformate-containing part would produce a Fehling reagent reaction. The reaction phenomenon was the formation of brick-red cuprous dioxide precipitations. Its chemical formula is: HCOOCH3 + 2Cu(Ox)2 --Cu2O + HOCOOCH3 + 2H2O, where HOCOOCH3 is a ester of carbon dioxide, which is unstable and will be decomposed into carbon dioxide and alcohol. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Image Problem of the Reaction of Metal and Acid
In the image problem of the reaction of metals with excessive acid, the following situations were mainly involved: ##1. The horizontal coordinate is reaction time. 1. ** Reaction Rate Relationship ** - When different metals react with excess acid, the reaction rate depends on the mobility of the metal. In the middle school chemistry exam, the metal activity was in the order of Mn> Mn. This meant that under the same conditions (such as the same concentration of acid, the same temperature, the size of the metal particles, etc.), the reaction rate from fast to slow was also: Mn> Mn. The image showed the degree of inclination of the diagonal line. The greater the inclination, the faster the reaction speed. 2. ** The final mass of hydrogen produced ** - When the same amount of different metals react with an excess of acid, the mass of hydrogen produced is related to the relative atomic mass of the metal (when the metal has the same valency). According to the chemical equation, the mass relationship of hydrogen produced by the reaction of a metal of the same mass with a sufficient amount of acid was as follows: The higher the platform, the greater the mass of hydrogen produced. ##2. The horizontal coordinate is the mass of the acid. 1. ** Reaction process analysis ** - In the process of increasing the mass of acid, the metal will react completely because there is a small amount of metal (acid excess). The quality of the corresponding acid after the reaction of different metals was different, and the quality of the hydrogen produced was also different. 2. ** Phased analysis of the quality of hydrogen produced ** - At different stages, depending on the activity and relative atomic mass of the metal, there would be different situations where the metal was in excess or completely reacted, which would affect the amount of hydrogen produced. For example, in a certain interval, there may be excessive or complete reaction of the iron, the aluminum, and the aluminum. At this time, the quality of the generated hydrogen would have a specific situation. As the acid quality increased, when entering the next interval, there may be insufficient amount of the iron, or the iron may be excessive or complete reaction. The aluminum and the aluminum may be excessive, and the quality of the hydrogen would change accordingly. ##3. Key Points 1. ** Judging excessive and small amount ** - First of all, he had to judge the excessive and small amount of metal and acid through the description in the question. For example, he could see the words "small amount","sufficient amount","excessive amount", etc. The final amount of hydrogen produced in the reaction was determined by the small amount of the reagent. 2. ** Explain the meaning of the horizontal and vertical coordinates ** - When analyzing the image, it was necessary to distinguish the specific meaning of the horizontal and vertical coordinates in the image. Generally, the vertical coordinate was the amount of hydrogen produced, and the horizontal coordinate might be the reaction time, the mass of acid consumed, or the mass of metal consumed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Which smelting metal is an oxidization reaction?
Metal smelting was mostly an oxido-reduction reaction. In the process of metal smelting, when reducing agents such as carbon, carbon dioxide, and hydrogen react with metal oxides at high temperatures, the reducing agent will undergo an oxidization reaction (the chemical valency will increase and the electrons will be lost), and the metal elements in the metal oxides will undergo a reduction reaction (the chemical valency will decrease and the electrons will be obtained). For example, the thermal reduction method was used to smelt metals. It used a reducing agent with strong thermal reduction properties to reduce the metal from its compound. It was an oxido-reduction reaction that followed the conservation of lost and gained electrons. The coke reduction method, carbon dioxide reduction method, hydrogen reduction method, active metal reduction method, etc. all involved oxido-reduction reactions. In the ancient silver refining process, the cellar mass needed to go through a reduction process (melting silver into lead), and then go through an oxidization process (separation of lead and silver) to obtain raw silver. The oxidization reaction here was the reaction of lead in the furnace ash, separating lead from silver. It was also the embodiment of the principle of the oxidoreduction reaction in metal smelting. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Which smelting metal is the product of the oxidization reaction?
During the metal smelting process, the reducing agent would undergo an oxidisation reaction to produce an oxided product. When carbon, carbon dioxide, hydrogen, and the like were used as reducing agents to react with metal oxides at high temperatures, the reducing agent's valency would rise, and it would lose electrons, causing an oxidization reaction to occur, resulting in an oxided product. For example, when hydrogen was used to reduce metal compounds, the hydrogen's chemical valency would rise to become water, and water would be the oxided product. However, different smelting reactions would produce different products, which needed to be determined according to the specific reaction process and the reagents and products. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction Law of Nitric Acid with Metal and Nonmetal
1. ** Reaction law of nitrates and metals ** - ** Passivation phenomenon **: Metal such as iron, aluminum, and aluminum are easily dissolved in dilute sulfuric acid, but they are not dissolved in cold concentrated sulfuric acid. This is due to the occurrence of a passive phenomenon. - ** Reaction with non-active metals ** - When the metal activity order table showed that the metal reacted with the metal after hydrogen, it could be seen that the metal was first oxided by the acid, and then the metal reacted with the acid to form nitrates. The main reduction product of concentrated sulfuric acid was NO2, and the main reduction product of diluted sulfuric acid was NO. For example, the reaction of silver with concentrated sulfuric acid: <2Ag +2HNO3 (concentrated)= Ag2O +2NO2 + H2O>,<Ag2O +2HNO3 = 2AgNO3 + H2O>, the total reaction is <2Ag +2HNO3 (concentrated)= AgNO3 + NO2 + H2O>; The reaction of silver with diluted sulfuric acid: <3Ag +4HNO3 (diluted)= 3AgNO3 +NO +2H2O>. - ** Reaction with active metals **: When sulfuric acid acts with the metal before hydrogen in the metal activity order table, in addition to the corresponding nitrates, the sulfuric acid may be further reduced to substances such as <anno data-annotation-id ="00000000 - 4000 - 4000 - 4000 - 8000 - 9000000000"></anno>,</anno>, and </anno>. In general, active metals react with concentrated sulfuric acid to form <anno data-annotation-id ="00000000 - 4000 - 4000 - 8000 - 8000 - 90000000000"> NO2 </anno>, dilute sulfuric acid to form <anno data-annotation-id ="0000000 - 4000 - 4000 - 9000 - 900000000000"> NO </anno>, and extremely dilute sulfuric acid to form <anno data-annotation-id ="20000a000000 - 90000000000"></anno></anno></anno>. For example, the reaction of calcium with different concentration of sulfuric acid: - \(Mg + 4HNO_3(16mol/L)=Mg(NO_3)_2+2NO_2↑+2H_2O\) - \(3Mg + 8HNO_3(6mol/L)=3Mg(NO_3)_2+2NO↑+4H_2O\) - \(4Mg + 10HNO_3(2mol/L)=4Mg(NO_3)_2+N_2O↑+5H_2O\) - \(4Mg + 10HNO_3(1mol/L)=4Mg(NO_3)_2+NH_4NO_3+3H_2O\) - \(5Mg + 12HNO_3(0.5mol/L)=5Mg(NO_3)_2+N_2↑+6H_2O\)。Moreover, the thinner the sulfuric acid was, the lower the valency of the nitrogen in the reduction product. However, it could not be mistaken that the dilute sulfuric acid had a stronger oxidisation ability than the concentrated sulfuric acid. In fact, the more concentrated the sulfuric acid was, the stronger the oxidisation ability was. - ** Special Metal Reaction **: Metal such as tin, stibine, and tungsten do not have much effect on nitrates. They may form an oxide-like substance that is not dissolved in nitrates, but they cannot form nitrates. 2. ** Reaction law of sulfuric acid and non-metals **: When sulfuric acid and non-metals react, it only shows the oxidisation property. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>