The reason why the reaction of the sulfuric acid with the concentrated Bromine water will change color
When the reaction between the two was carried out, a white deposit of tribromo-phenol was formed. When there was an excess of Bromine water, the excess Bromine would dissolve in Tribromnol, causing the deposit to appear yellow. This was because the aromatic ring in the molecules was affected by the side chain of the hydrogen radical. The electron cloud of the lone pair p electron on the oxygen atom of the hydrogen radical overlapped with the electron cloud of the large pi bond on the aromatic ring from the side to form a p-pi bond, which increased the density of the electron cloud on the aromatic ring, especially the ortho-position and para-position of the hydrogen radical. The ortho-position and para-position of the hydrogen radical were easy to undergo a substitution reaction with Bromine to form tribrom-phenol. Read more exciting novels for free
Why can the sulfuric acid react with the concentrated Bromine water?
The reason why the reaction between the two was possible was that the electron cloud density of the ortho-and para-position of the ortho-and-para-position of the ortho-and-position of the ortho-and-para-position of the ortho-and-para-position of the ortho-and-position of the <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to match the reaction formula of concentrated sulfuric acid and concentrated sulfuric acid with the reaction formula of aromatic acid?
Under the catalyst of concentrated sulfuric acid, 1 mole of aromatic acid and 1 mole of concentrated sulfuric acid reacted to form 1 mole of nitrogen and 1 mole of water. The reaction formula was: C6H6 (aromatic ring)+ HNO3 + H2SO4 (catalyst) → C6H5-NO2 + H2O. If it was to form m-dinitro, the reaction formula was: C6H6 + 2HNO3--> C6H4 (NO2) 2 (dinitro is in the meta-position)+2H2O. <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>
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>
What is the reason for increasing the dosage of concentrated sulfuric acid in the fermentation reaction?
In the esterfication reaction, the amount of concentrated sulfuric acid used was not the better. Generally speaking, the amount of concentrated sulfuric acid should be determined according to the type of the reagent and the reaction conditions. In the conventional ester reaction, 1 - 2 times the mole of concentrated sulfuric acid is usually used as a catalyst. If the reagent contains a strong acidic group, such as a starch group, a sulfuric acid group, etc., the amount of concentrated sulfuric acid can be appropriately reduced to avoid overreaction. If the amount of concentrated sulfuric acid was increased, it would cause an overreaction and produce a large amount of by-products. At the same time, it would also increase the difficulty and cost of the reaction, instead of increasing the fermentation reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What is the color reaction of copper sulfuric acid in water?
Copper Sulphate (CuSO) is a white powder. When water is added, it will undergo a hydrating reaction (CuSO +5H ^O CuSO·5H ^O). Due to the formation of copper ions, the white color of copper sulphate will turn into blue crystalline particles (copper sulphate). Its water solution (Copper Sulphate Solution) was sky blue and weakly acidic. <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>
What is the reaction of concentrated sulfuric acid and ester?
Under normal conditions, the ester and concentrated sulfuric acid would not react, so there was no reaction product. In the preparation of ester, the reaction between alcohol and acid required concentrated sulfuric acid as a catalyst, and concentrated sulfuric acid played the role of a catalyst and a water absorbing agent in the reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Reaction between aluminum phosphorous acid and concentrated sulfuric acid
The chemical equation for the reaction of aluminum phosphorous acid (AlPo) with concentrated sulfuric acid is: AlPo +3HQ = AlCl2 + H Po. The reaction phenomenon was that the solid aluminum phosphorous acid gradually dissolved. Since the aluminum chloride-formed (AlClCl2) and phosphorous acid (H3PO4) were both water-dissolved, the solid of aluminum phosphorous acid gradually decreased until it was completely dissolved as the reaction progressed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What kind of reaction type solution is the mixture of concentrated sulfuric acid and sulfuric acid?
The reaction of adding concentrated sulfuric acid to the sulfuric acid was called a sulfuric acid reaction. In organic chemistry, the reaction of introducing a sulfuric acid group (-SOH) into the molecules of organic compounds was called a sulfuric acid reaction. This was an electropathic substitution reaction, in which the hydrogen atom on the aromatic ring in the molecular structure of the ether was replaced by a sulfuric acid group. Sulfonation reaction was a kind of reverse reaction. Different products could be produced according to different reaction conditions. Sulfonation of aromatic compounds usually uses concentrated sulfuric acid or fuming sulfuric acid containing 5% - 20% sulfur dioxide. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>