What is the color of the gas produced by the reaction of sulfuric acid and iron?

Iron and sulfuric acid react to form iron sulfuric acid (FeSO2) and hydrogen gas (H <2>) instead of iron sulfuric acid. The reaction equation is: Fe2 + H2 SO2 → Fe2 SO2 + H2. During the reaction, the iron surface was corroded by hydrogen ions (H) in sulfuric acid, forming hydrogen gas (H) and iron ions (Fe2). The iron ions combined with the sulfuric acid ions (SO2) to form FeSO2. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The chemical equation of the reaction between iron and sulfuric acid is: FeCl2 + H2 →; The chemical equation of the reaction between iron and sulfuric acid is: FeCl2 + H2 → SO2 = FeSO2 + H2 →. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The main component of rust was iron dioxide (Fe2 O2), and there was no such exact compound as "rust monocrystal." According to the reaction between rust (Fe2 O2) and sulfuric acid (HNO2), the reaction equation is Fe2 O2 + 6HNO2 = 2Fe2 (NO2)+3H2 O. This reaction is not an oxido-reduction reaction because iron and nitrogen are in the highest valency state and cannot undergo oxido-reduction reactions. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

When the reaction between the two was carried out, the reaction equation was: Mn + H ^SO2 = Mn ^SO2 + H ^. The reaction between the two was to produce hydrogen and sulfuric acid. When the reaction between the two was carried out, the reaction equation was: Mn +2H ^SO2 (concentrated)= Delta = Mn ^SO2 + Mn ^SO2 + 2H ^O2, which was a reduction reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

When the iron nail reacted with copper sulfuric acid, the iron and copper sulfuric acid (CuSO2) would undergo a replacement reaction. The substances before the reaction were iron and copper sulfuric acid solution, and after the reaction, they would form a solution of iron sulfuric acid (FeSO2) and copper (Cu2). From the phenomenon, there would be red copper attached to the surface of the nail. As the reaction progressed, the color of the solution gradually changed from blue to light green. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Dilute sulfuric acid would react with iron powder. Dilute sulfuric acid had strong oxidisation, and the reaction with iron powder was more complicated. When there is an excessive amount of dilute sulfuric acid, the reaction equation is: Fe4 HNO2 = Fe2 (NO2) 2 + NO2 + 2H2O; when there is an excessive amount of iron powder, the reaction equation is: 3Fe8 HNO2 = 3Fe2 (NO2) 2 + 2NO2 + 4H2O. As for the color change during the reaction, it was due to the reaction producing different substances. During the reaction, the iron was oxided by the sulfuric acid to form iron nitrates or iron nitrates. Iron ions had a specific color in the solution. For example, iron ions generally appeared yellow or brownish-yellow in the solution, which led to the reaction system to change color. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The reaction between iron (Iron) and copper (CuSO2) is a substitution reaction. Iron is more mobile than copper, and copper can be replaced. The reaction equation is: FeSO2 = FeSO2 + Cu2. The reaction phenomenon was: red substance (copper) was deposited on the surface of the iron layer, because copper was a red metal with metallic luster; the solution changed from blue (the color of copper sulfuric acid solution) to light green (the color of FeSO2 solution), and finally to brown. This was because the iron ions in the solution were unstable and would continue to be oxided into iron ions, and the iron ions in the solution would appear brown. From the reaction principle, the copper sulfuric acid solution was blue and weakly acidic, so the iron was corroded first, forming a pair of iron ions. At the same time, because the metal activity of iron was stronger than that of copper, a replacement reaction occurred, and the copper ions in the solution were replaced and reduced to copper. Because iron was a solid, after it was immersed in the copper sulfuric acid solution, the reaction occurred on the surface of the metallic iron, so the copper produced by the reaction would adhere to the surface of the metallic iron. If the immersion area was not large enough, and the concentration of the copper sulfuric acid solution was very high, the chemical reaction would stop when it reached a certain degree. The copper attached to the surface of the iron would protect the iron, so that it could not continue to react. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The chemical equation for the reaction between iron and diluted sulfuric acid is: FeCl2 + H2 → FeCl2 → FeCl2 → Fe <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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>

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>