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. Read more exciting novels for free
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>
What is the reaction equation and phenomenon of concentrated sulfuric acid carbonation?
以蔗糖为例，浓硫酸碳化反应方程式为：$C_{12}H_{22}O_{11}\stackrel{浓硫酸}{=\!=\!=}12C + 11H_{2}O$，反应过程中首先蔗糖在浓硫酸作用下脱水，生成碳和水，试验中蔗糖会变黑，黑色的就是碳颗粒;然后脱水反应产生的大量热让浓硫酸和碳发生反应：$C + 2H_{2}SO_{4}(浓)\stackrel{加热}{=\!=\!=}CO_{2}\uparrow+ 2SO_{2}\uparrow+ 2H_{2}O$。 现象为：被浓硫酸碳化的物质一般为含氢、氧元素的有机物，反应时有机物迅速变黑，这是由于浓硫酸按水分子中氢氧原子数的比（2∶1）夺取被脱水物中的氢原子和氧原子，使其碳化，同时可能会产生二氧化硫等气体。 <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>
How to write the reaction equation of sulfuric acid and iron excess
1. 当铁与过量浓硫酸反应时： - 反应方程式为\(2Fe + 6H_{2}SO_{4}(\text{热、浓})=Fe_{2}(SO_{4})_{3}+3SO_{2}\uparrow+6H_{2}O\)。 2. 随着反应进行，浓硫酸变稀后，过量的铁会继续与稀硫酸反应： - 反应方程式为\(Fe + H_{2}SO_{4}=FeSO_{4}+H_{2}\uparrow\)。 <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>
What does the reaction of excess iron and concentrated sulfuric acid mean?
The reaction between excess iron and concentrated sulfuric acid meant that the amount of iron was sufficient for concentrated sulfuric acid. From the nature of the reaction, iron and concentrated sulfuric acid would undergo a "passive" phenomenon at room temperature, that is, a dense oxide-film formed on the iron surface to prevent the reaction from proceeding further. However, the reaction could continue under heating and other conditions. When iron reacted with concentrated sulfuric acid, as the amount of iron increased (in excess), more iron would participate in the reaction. Iron reacted with concentrated sulfuric acid to produce products such as iron nitrates. If there was an excess of iron, the excess iron would further react with the generated iron nitrates to reduce the iron nitrates. The final product might contain both iron nitrates and iron nitrates. In addition, there would also be nitrogen dioxide gas produced during the reaction of iron and concentrated sulfuric acid. The reaction situation was relatively complicated and involved the process of oxido-reduction reaction. The valency of the iron element would change during the reaction. The chemical valency of the nitrogen element in the sulfuric acid would also change. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction equation and phenomenon of concentrated sulfuric acid adding carbon dioxide
There was no reaction between carbon dioxide and concentrated sulfuric acid, so there was no reaction equation and no phenomenon caused by the reaction between the two. The concentrated sulfuric acid had the ability to absorb water and could be used as a drying agent in the preparation process of carbon dioxide. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Ionic equation reaction of iron and concentrated sulfuric acid for heating
The ion equation of the reaction between iron and concentrated sulfuric acid under heating conditions is: Iron +6H +3NO = Fe3 + 3NO ^+3H ^O. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction equation of concentrated sulfuric acid and sulfuric acid ester
Under normal conditions, ester and concentrated sulfuric acid would not react, so there was no reaction equation. <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>
The phenomenon of co-thermal reaction between iron and concentrated sulfuric acid
When iron was heated together with concentrated sulfuric acid, the reaction could occur because the heat destroyed the dense oxide-film on the iron surface. During the reaction process, gas would be generated and the iron would gradually be consumed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction of concentrated sulfuric acid, concentrated sulfuric acid, and concentrated sulfuric acid
When the reaction of the solution of excessive amount of potassium moons and concentrated sulfuric acid was carried out, the pale yellow crystals of phosphorus moons would be formed. The reaction equation was: PO4 ^3- +12MoO4 ^2- + 3NH4^+ + 24H^+= (NH4)3(P(Mo12O40))·6H2O → +6H2O. This was the characteristic reaction for identifying phosphorus radical. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>