The reason why the dosage of concentrated sulfuric acid was increased was that
The concentrated sulfuric acid mainly played a role in the fermentation reaction. The amount of sulfuric acid needed for the fermentation was only 3% of the amount of alcohol, but sometimes a little more was added. The reason was that the concentrated sulfuric acid could absorb the by-product water generated by the reaction in addition to the catalyst, thus promoting the reaction in the direction of ester formation. However, it could not be added too much, or else the strong sulfuric acid would aggravate the fermentation reaction during heating, which was unfavorable to the fermentation and uneconomical. Read more exciting novels for free
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>
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>
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 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>
Copper and concentrated sulfuric acid are dismutation reactions
No, the reaction between copper and concentrated sulfuric acid was not a disproportionate reaction. The reaction equation between copper and concentrated sulfuric acid is: [Cu +2H ^SO2 (concentrated)][stacking]{heating}{=] CuSO + SO2 ^+2H2O). In this reaction, the valency of copper increases from 0 to +2 and is oxided, and the valency of sulfur in concentrated sulfuric acid decreases from +6 to +4 and is reduced. This reaction belongs to the type of reduction reaction in the oxidoreduction reaction. Disproportionation reaction refers to the reaction where if the oxidofication and reduction occur on an element in the same molecular state, part of the atoms (or ions) of the element will be oxided. The other part was restored. <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>
How will the battery react with concentrated sulfuric acid?
The positive and negative poles of lead-acid batteries were made of lead oxide-metal lead, and the battery was made of concentrated sulfuric acid. The concentrated sulfuric acid could react with metals and also with metal compounds. Therefore, in lead-acid batteries, concentrated sulfuric acid would react with lead dioxide and metal lead. The specific reaction process was more complicated, and the conversion of chemical energy and electrical energy was realized during the reaction process. <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>