2Fe2+ + H2O2 + 2H+ = 2Fe3+ + 2H2O。 Read more exciting novels for free
Under acidic conditions, manganate (Mn O42-) will react with hydrogen dioxide (H2O2). The ion equation is: Mn O42- +2H2O2 + 4H + = Mn2+ +4H2O +2O2. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction between the solution of potassium iodate and the solution of hydrogen peroxideneeded to be carried out under acidic conditions, so sulfuric acid was added to the reaction. The reaction equation was H2O2 + 2Ki + H2SO4 = I2 + K2SO4 + 2H2O. <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>
At the beginning of the reaction, only a small amount of bubbles were produced. After a while, a large number of bubbles were produced. Finally, a reddish-brown deposit appeared at the bottom of the test tube. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction between iron and sulfuric acid could not produce hydrogen, and the reaction type was not a substitution reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
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>
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>
The total reaction of the primary battery is: [H_{2}+ Cl2}= 2HQ]. Negative reaction: <H_{2}-2e = 2H^{+}> The positive reaction: <Cl2>+2e = 2Cl2> <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
When the reaction of the iodate with diluted sulfuric acid and hydrogen peroxol occurred, an oxidoreduction reaction would occur. In this reaction system, the hydrogen peroxid had an oxidiser property, and the iodines in the potassium iodate had a reducing property. During the reaction process, there would be the formation of elemental sulfur. The chemical equation of the reaction is: H ^O ^+ 2Ki + H ^SO= I ^+ K ^SO+ 2H ^O. In terms of reaction phenomena, the color of the solution would change. Due to the color of the elemental sulfur in the water solution, the solution would turn brownish-yellow. This change process was a chemical change. Because new substances such as iodines were formed, the valency of the elements changed during the reaction process, which was in line with the characteristics of chemical changes. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The chemical equation for the reaction of iron and sulfuric acid to produce iron dioxide and hydrogen is: FeCl2 + H2. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>