When the reaction between the solution and the solution of concentrated copper sulfuric acid occurred, a layer of precipitative film would be formed on the surface of the solution, which would slow down the movement of the solution. The heat on the surface of the solution would continue to accumulate. When the heat reached the ignition point of the solution, it would cause the solution to catch fire, which might be accompanied by a slight explosion. Read more exciting novels for free
过氧化钠与硫酸反应实际分两步进行,第一步反应为\(2Na_{2}O_{2}+2H_{2}O = 4NaOH + O_{2}\),第二步反应为\(2NaOH+H_{2}SO_{4}=Na_{2}SO_{4}+2H_{2}O\),总的反应方程式为\(2Na_{2}O_{2}+H_{2}SO_{4}=Na_{2}SO_{4}+2NaOH + O_{2}\)。 <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>
Elemental sulfur can undergo an oxido-reduction reaction with concentrated sulfuric acid under heating conditions. Sulfur is oxided to sulfuric acid with a +6 valency, and concentrated sulfuric acid is reduced to nitrogen dioxide with a +4 valency. The reaction equation is: S +6HNO= heating = H ^SO+ 6NO ^+2H ^O. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction between diluted sulfuric acid and sulfur dioxide produces water, nitrogen dioxide gas, and sulfur precipitations. The reaction equation is: 8HNO +3Na ^S = 4H ^O + 2NO ^+6NaNO + 3S. The reaction between concentrated sulfuric acid and sulfur dioxide produces water, nitrogen dioxide gas, and sulfur precipitations. The reaction equation is: 4HNO + Na ^S = 2H ^O + 2NO ^+ 2NaNO + S. However, there was also a view that the reaction could not produce sulfur and sulfur. Instead, it would produce either sulfur and sulfur, or sulfur and water, or other nitrogen and oxygen compounds. <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>
When the iron reacted with the copper sulfuric acid solution, the surface of the iron layer would release a red substance, and the solution would turn from blue to light green and finally brown. This was because the copper sulfuric acid solution was blue and weakly acidic, so the reaction first corroded the iron and formed the iron ions. The iron ions solution was light green, causing the solution to change from blue to light green. At the same time, because the metal activity of iron was stronger than copper, a replacement reaction occurred. The copper ions in the solution were replaced and reduced to copper. The copper was red, and red substances were separated from the surface of the iron. Subsequently, the iron ions in the solution were unstable and would continue to be oxided into iron ions. The iron ions in the solution were brown, so the solution would turn from light green to brown. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
In a primary battery composed of copper (Cu) and dilute sulfuric acid, the negative reaction formula was: Cu -2e = Cu2. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The iron nail and copper sulfuric acid undergo a replacement reaction, and the chemical equation is: During the reaction process, red copper would be formed on the surface of the nail and adhere to the surface of the nail. As the reaction progressed, the copper ions in the copper sulfuric acid solution would be replaced, and the copper sulfuric acid in the solution would gradually decrease. The color of the solution would gradually turn from blue to light green. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction process between copper sulphate and Na was more complicated. First of all, copper sulfuric acid was a strong acid and weak base salt. In an water solution, copper ions would undergo a reaction: $Cu^{2 + } + 2H_{2}O/rightlefttharpoons CuClO +2H ^{+}$. This reaction would make the solution acidic. When Na is added to the copper sulphate solution, the Na first reacts with water: $2Na + 2H_{2}O = 2NaOx + H_{2}. This reaction forms a strong base, which makes the solution basic. Then, the formed soda ash reacted with copper sulphate: $2NaOx + CuSO4 = CuOx = CuOx = CuOx. Therefore, in the reaction system of copper sulfuric acid and copper sulfuric acid, the two processes of the decomposition of copper sulfuric acid and the reaction of the reaction of the acid and water to form a base could reflect the acidic and basic properties. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction rate of concentrated sulfuric acid with copper was faster than that of diluted sulfuric acid with copper. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
铁与硝酸的反应: - 铁和稀硝酸反应:\(Fe + 4HNO_{3}(稀)=Fe(NO_{3})_{3}+NO↑+2H_{2}O\)。 - 铁遇浓硝酸在常温下会钝化,加热时反应:\(Fe + 6HNO_{3}(浓)\stackrel{△}{=}Fe(NO_{3})_{3}+3NO_{2}↑+3H_{2}O\)。 - 若\(Fe\)过量,会与\(Fe(NO_{3})_{3}\)继续反应:\(Fe+2Fe(NO_{3})_{3}=3Fe(NO_{3})_{2}\)。 铜与硝酸的反应: - 铜与稀硝酸反应:\(3Cu + 8HNO_{3}(稀)=3Cu(NO_{3})_{2}+2NO↑+4H_{2}O\)。 - 铜与浓硝酸反应:\(Cu + 4HNO_{3}(浓)=Cu(NO_{3})_{2}+2NO_{2}↑+2H_{2}O\)。 当铁铜混合物与硝酸反应时,若硝酸不足量,反应后生成硝酸盐,溶液中的盐含有\(NO_{3}^{-}\),再加稀硫酸提供\(H^{+}\),会发生氧化还原反应,再次溶解一部分金属。 <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>