What is the reaction equation of concentrated sulfuric acid and iron powder at room temperature?
The reaction between concentrated sulfuric acid and iron powder at room temperature would result in a passive phenomenon, which was to form a layer of dense oxygen film on the iron surface to prevent the reaction from proceeding further. There was no reaction equation. Read more exciting novels for free
How to write the reaction equation of concentrated sulfuric acid and iron powder at room temperature?
Iron and concentrated sulfuric acid react. The sulfuric acid has strong oxidisation, which will vaporize iron into Fe3, and then reduce itself to NO2. The reaction equation is: Iron +6HNO2 (concentrated)= Iron (NO2)+3NO2 ^+3H2O. At room temperature, when iron came into contact with concentrated sulfuric acid, a dense layer of oxygen film would quickly form on the surface of the iron, preventing the reaction from proceeding further. However, in terms of the nature of the reaction, the reaction equation would be written as above if the decomposition was not considered. This was based on the strong oxidisation of sulfuric acid and the common change in the iron's oxidisation state. The nitrogen element in the sulfuric acid was reduced from +5 to +4 NO2, and the iron was oxided from 0 to +3 Fe3. The reaction equation was obtained according to the conservation of atoms. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction equation of concentrated and diluted sulfuric acid with iron
1. 铁与浓硝酸反应： - 常温下铁在浓硝酸中会钝化，不反应。 - 加热时，若铁少量：\(Fe + 6HNO_{3}(浓)=\triangle=Fe(NO_{3})_{3}+3NO_{2}\uparrow+3H_{2}O\); - 若铁过量：\(Fe + 4HNO_{3}(浓)=\triangle=Fe(NO_{3})_{2}+2NO_{2}\uparrow+2H_{2}O\)。 2. 铁与稀硝酸反应： - 若铁少量：\(Fe + 4HNO_{3}(稀)=Fe(NO_{3})_{3}+NO\uparrow+2H_{2}O\); - 若铁过量：\(3Fe + 8HNO_{3}(稀)=3Fe(NO_{3})_{2}+2NO\uparrow+4H_{2}O\)。 <a href="/?from=ask_words" style="color:red" target="_blank">点击前往免费阅读更多精彩小说</a>
Reaction equation and phenomenon of excess iron and concentrated sulfuric acid
Iron reacted with concentrated sulfuric acid. If there was an excess of concentrated sulfuric acid, the reaction equation was: Fe6 HNO2 (concentrated)= heating = Fe3 (NO2)+3NO2 ^+3H2 O. If there is an excess of iron, the reaction equation is: Fe4 HNO2 (concentrated)= heating = Fe2 (NO2) 2 + 2NO2 2 + 2H2 O. [Phenomenon: The reaction produces reddish-brown gas (NO <2>), and the iron is gradually dissolved.] At the same time, the color of the solution may vary according to the relative amount of iron and sulfuric acid and the degree of reaction. If the solution is formed, it may be brownish-yellow, and if the solution is formed, it may be light green. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Phenomenal equation of heating reaction between iron and concentrated sulfuric acid
The chemical equation for the reaction between iron and concentrated sulfuric acid is: Fe6HNO2 (concentrated)= heating = FeNO2 + 3NO2 + 3H2O. The reaction phenomenon was that reddish-brown gas (NO <2>) was produced and the iron gradually dissolved. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction equation for preparing concentrated sulfuric acid and nitrogen gas
Based on context alone The concentrated sulfuric acid could not be used for the preparation of hydrogen. Because hydrogen is an basic gas, concentrated sulfuric acid is volatile and acidic. When the two meet, a reaction will occur: <anno data-annotation-id ="cdf10000 - 4c00 - 4c10 - 4c10-a100-a11111110000"></anno>(the reaction phenomenon is to produce a large amount of white smoke), rather than being used to prepare hydrogen. The laboratory usually uses a solid mixture of lithium monium and lithium monium to heat up to prepare hydrogen. The reaction equation is [2NH4] Cl2 + CaCl2][2][3][4][4][5][6][7][8][8][9][9][ CaCl_{2}+2H_{2}O + 2NH_{3}\uparrow\)。 <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The equation of the reaction between cuprous chlorideand concentrated sulfuric acid
The chemical equation for the reaction of cuprous chloride-concentrated sulfuric acid is: CuCl2 = H(CuCl2). There were also opinions that the reaction equation was cucl +2hci = h2(cucl3), and there were opinions that cuprous chlorideand concentrated sulfuric acid did not react. The reason why cuprous chloridecould be dissolved in concentrated sulfuric acid was because of the formation of a complex. The resulting solution should be colorless, but it often had a brown color when placed in the air. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction equation of sulfuric acid and sulfuric acid
There was no reaction between Na2SO4 and CH3COH. Because the acid was weak and the sulfuric acid was strong, the reaction of the weak against the strong usually could not happen. Therefore, there were no reaction equations and reaction phenomena, so it was impossible to provide a summary in the form of a table. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The chemical equation of the reaction between concentrated sulfuric acid and copper dioxide
The chemical equation of the reaction between concentrated sulfuric acid and copper dioxide is CuO +2HQ = CuCl2 + H2 O. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction rate equation of iron and dilute sulfuric acid
The chemical equation of the reaction between iron and dilute sulfuric acid was: FeSO2 = FeSO2 + H2. The reaction rate was affected by many factors, such as the concentration of the reagent, temperature, the surface area of the iron, and the presence of a catalyst. However, there was no specific equation called the " reaction rate equation of iron and dilute sulfuric acid " to describe the reaction rate. From the perspective of reaction rate theory, according to the effective collision theory, the reaction rate was related to the frequency of effective collisions between activated molecules. " For example, when the concentration increases, the number of molecules of the reagent in the unit volume increases, and the number of activated molecules also increases correspondingly. The effective collision frequency increases, and the reaction rate increases. When the temperature increases, the speed of the molecular movement increases, and the percentage of activated molecules increases. The effective collision frequency increases, and the reaction rate increases. The surface area of the solid iron increases, and the chances of contact between the reagents increase, and the reaction rate also increases. If there was a catalyst involved, the activation energy of the reaction could be reduced, allowing more molecules to become activated molecules, increasing the effective collision frequency and accelerating the reaction rate. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
identification method for reaction of concentrated sulfuric acid and sulfuric acid
Acetic anhydryride-concentrated sulfuric acid reaction (Liebermann-Burchard reaction) can be used to identify tripenoid and steroid side. The specific identification method was as follows: dissolve the sample in vinegar and add concentrated sulfuric acid-vinegar (1:20). If the final color was red or purple, it was triterpene soap. If the final color was blue-green, it was steroid soap. During the reaction process, color changes such as red → purple → blue → green → dirty green would occur in turn, and finally the color would fade. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>