Does the concentrated sulfuric acid react with the alcohol? Why does it change?
Benz alcohol could not react with concentrated bromine water. The reason why the tribrom-alcohol could react with concentrated Bromine water to form tribrom-alcohol was that--OH had an activation effect on the hydrogen atom on the ortho-position of the aromatic ring, making it active and easy to replace. The activation effect of the aromatic ring on the aromatic ring was not as good as--OH, so it could not react with concentrated Bromine water, and there would be no related reaction changes. Read more exciting novels for free
Can ethene and concentrated sulfuric acid react?
The reaction equation for the reaction between ethene and concentrated sulfuric acid was: CH2 = CH2 + H2SO4 → CH3CH2OSO3H. In chemistry, there was no reaction without heating or concentration, such as the reaction between carbon and concentrated sulfuric acid or concentrated sulfuric acid, the reaction between copper and concentrated sulfuric acid. The reaction between ethene and concentrated sulfuric acid was not mentioned. However, according to the laws of chemistry, ethene had a certain degree of reduction, and concentrated sulfuric acid had strong oxidization. Under certain conditions, the two could react. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The preparation of bromic ether by the reaction of alcohol, NaBr2 and concentrated sulfuric acid
In the reaction of preparing bromic ether, the first reaction was the reaction between concentrated sulfuric acid and the solution of the acid.(It can only produce bisulfuric acid, which can be referred to the reaction with NaCl2). The reaction equation is [H_{2} SO4}+ NaBr2 = NaHSO4 + Brr]. Then the formed [Brr] will react with alcohol. Under the conditions of concentrated sulfuric acid absorbing water and heating, the bromoether will be vaporized. The reaction equation is [Brr + CH3} CH2} 0H = CH3} CH2} Br2 + H2}O]. <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>
Can sulfuric acid and sulfuric acid react? Why does it change color?
Sulfuric acid and sulfuric acid did not react. The crystals were colorless, and the solid powder was white. This color was its own physical properties, not caused by the reaction between sulfuric acid and sulfuric acid. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Why can't the solid of sulfur dioxide and concentrated sulfuric acid react?
The reaction between the solid of sulfur dioxide and concentrated sulfuric acid is Na2S +2H2SO4 (concentrated) == S +2H2O + SO2 + Na2SO4. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How does the sulfuric acid react with the sulfuric acid?
The reaction between the alcoholic group and the solution was an alkali-base reaction, which was accompanied by the protonation of the alcoholic group and the deprotonation of the solution. In the reaction, the hydrogen atom in the alcoholic group was replaced by the alcoholic group in the sulfuric acid, forming water and a positively charged ion. At the same time, the negative ion in the sulfuric acid combined with the positively charged ion in the alcoholic group to form a salt. The reaction equation was: <<p>><p></p>><p></p>><p><p>><p><p>><p><p>><p><p>><<p>><p> p>><p>> p> p>>& gt In general, because the alcoholic group was weakly acidic, it could react with the strong base, namely, soda. It did not require any special reaction conditions and could react at any time. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Why can sulfuric acid react with sulfuric acid?
It could react with sulfuric acid. The reason for the reaction between the two was that sulfuric acid had the ability to be acidic and could be used as a catalyst. From an acidic point of view, sulfuric acid could provide hydrogen ions to react with the ether. From the perspective of the sulfuric acid reaction, the sulfuric acid group (-SOH) in sulfuric acid could replace the hydrogen atom on the aromatic ring of the sulfuric acid. This was because the electron cloud density of the aromatic ring in the sulfuric acid was relatively high, and it was easy to be attacked by electrophiles (such as the sulfuric acid group in sulfuric acid), resulting in an electrophilic substitution reaction, which was the sulfuric acid reaction. During the reaction, different products would be produced depending on the reaction conditions. For example, it may produce p-hydrylsulfuric acid; if the reaction conditions are not properly controlled, because of the reduction of the ester and the oxidisation of the concentrated sulfuric acid, the ester may be oxided by the concentrated sulfuric acid into p-methylazone, and the p-hydrylsulfuric acid may be further Sulfonated to form 4 -hy- 1,3 -besilenedisulfuric acid. In order to prevent the sulfuric acid from evaporating the sulfuric acid during the process of sulfuric acid, the reaction temperature should be controlled to not exceed 90 ° C, and the concentrated sulfuric acid with a concentration of not more than 85% should be used. Other sulfuric acid could also be replaced by other sulfuric agents such as sulfur dioxide. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction between the polythene and the concentrated sulfuric acid
At room temperature, concentrated sulfuric acid would have a slow corrosive effect on the polythene, and at 90 - 100 ° C, concentrated sulfuric acid would rapidly erode the polythene, causing it to be destroyed or decomposed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Why can't hydrogen hydrogen react with concentrated sulfuric acid at room temperature?
Sulfuric acid reacted with concentrated sulfuric acid at room temperature. The concentrated sulfuric acid was a strong oxidiser, and the hydrogen sulfureted was a typical reducing agent. The two would undergo an oxido-reduction reaction. When the concentrated sulfuric acid is in excess, the reaction equation is: H ^S +3H ^SO2 = 4SO2 ^+4H ^O; when the hydrogen dioxide is in excess, 3H ^S + H ^SO2 = 4H ^O + 3S ^; when the amount of hydrogen dioxide and concentrated sulfuric acid is the same, H ^S + H ^SO2 ^= S ^+ SO2 ^+2H ^O. Because the two would react, they could not be used together in some situations, such as storage or situations where they needed to maintain their chemical stability. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Will the radical react with sulfuric acid?
Usually, they would not react with each other. They could coexist in water solutions. For example, in a solution of sulfuric acid, there were both sulfuric acid ions and sulfuric acid ions. However, in different environments, their existence and interaction would be different. In an acidic environment, the radical ions would combine with hydrogen ions to form water. In an acidic environment, both radical ions and sulfuric acid ions would exist, but the radical ions would be replaced by hydrogen ions in the base to form water. In an electrochemistry reaction, the reduction potential of the hydrogen ions was higher than that of the sulfuric acid ions. Therefore, the hydrogen ions would first accept electrons and be reduced to water molecules, while the sulfuric acid ions would be discharged later. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>