The reactions of acid, base and salt are all metathetical reactions
Not all reactions between acid, base, and salt were metatheses. In junior high school chemistry, the reaction of acid and metal to form salt and hydrogen, such as 2AI +3H ^SO = AI ^(SO)+3H ^^, this reaction is not a metathesis reaction. Alkali reacted with non-metallic compounds to form salt and water, such as 2NaOx + CO2 = Na Chi CO2 + H Chi O, which was also not a metathesis reaction. The reactions of neutralizing acid and base (acid + base = salt + water), acid and salt (acid + salt = new acid + new salt), base and salt (base + salt = new base + new salt), salt and salt (salt + salt = two new salt), and metal oxide-acid (acid + metal oxide-salt + water) were all metathetical reactions. Moreover, the metathesis reaction had to meet certain conditions. The reagent had to be dissolved in water or acid, and the product had to be either one or two of the three substances of precipitations, gas, and water. Read more exciting novels for free
The reactions with constant valency are all metathetical reactions
No, it wasn't. Although the valency of each element in the metathesis reaction does not change, there are other types of reactions that also have constant valency, such as the combination reaction (such as $2MG + O_{2}}{==} <strong></strong>Some reactions in the basic reaction types such as 2H_{2}"uparrow+ O_{2}""uparrow$", the valency of the elements before and after the reaction was unchanged, so it could not be said that the reaction with constant valency was a metathesis reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the changes in the images of the reactions between metals and acid, base and salt?
1. ** The horizontal coordinate is the reaction time, and the vertical coordinate is the change in the image when the mass of hydrogen is present ** - When the metal is in excess and the acid (with the same concentration) is insufficient, the quality of the hydrogen produced is determined by the quality of the acid. At this time, the quality of the hydrogen produced by different metals is equal, and the height of the "platform" in the image is the same. The reaction rate is determined by the activity of the metal. The order of metal activity is Mn> Mn. - When the acid (with the same concentration) was sufficient, the mass of hydrogen produced was determined by the mass of the metal. The mass relationship of hydrogen produced by the metal of equal mass was as follows: <anno data-annotation-id ="00000000 - 4150 - 4000 - 9000 - 8000000000"> Al'</anno> 2. ** Image change when the abyssal coordinate is the mass of acid and the ordinate is the mass of hydrogen ** - When 0 < m <a (excessive or just complete reaction, iron, magnetism, and aluminum are all excessive), the quality of the generated hydrogen is determined by the quality of the acid, so the quality of the generated hydrogen is the same. - When a < m <b (insufficient amount of iron, excessive amount of iron, or just complete reaction, excessive amount of aluminum and aluminum), the reaction of iron will begin after the reaction of iron. The mass of hydrogen generated will increase with the increase of the mass of acid, and the image trend will change after the reaction of iron. - When b < m <c (there was insufficient amount of iron and iron, too much or just enough reaction, and too much aluminum), the reaction between iron and iron was completed, and the reaction between the two started. The image trend changed again. 3. ** Image change when the abyssal coordinate is the mass of metal and the ordinate is the mass of hydrogen ** - At the beginning of the reaction, the metal was insufficient and the acid was excessive. The quality of the hydrogen produced was determined by the metal. Different metals produced hydrogen according to a certain ratio. As the metal continued to increase, when the metal was sufficient and the acid was insufficient, the quality of the hydrogen produced was determined by the acid. A turning point would appear in the image. Before the turning point, the quality of the hydrogen increased according to the ratio of the metal. After the turning point, the quality of the hydrogen would no longer increase and remain constant. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
There are several types of reactions when putting the salt into copper sulphuric acid.
Two types of reactions occurred when the solution was added to the solution. The first reaction was the replacement reaction between the water and the Na, and then the double decomposition reaction between the formed Na and the Cupric Sulphate. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Junior high school chemistry, what are the reactions of the reactions of the salt?
In junior high school chemistry, the following reactions could occur with the presence of NaCl3: 1. The reaction between the solution of NaCl2 and the solution of silver nitrates was a metathesis reaction. The chemical equation was: NaCl2 + AgNO2 = NaNO2 + AgCl2, which would produce an unresolvable precipitable silver chloride-like substance. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Images of iron and zinc-acid reactions
1. ** Reaction of iron and zincate with enough diluted sulfuric acid (abyssal coordinate is reaction time)** - Reaction rate: According to the order of metal activity, the reaction rate of the reaction between the metal and the diluted sulfuric acid is faster than that of the iron. In the image, the reaction curve for the reaction of the iron was much more inclined than the reaction curve for the reaction of the iron. - Quality of hydrogen produced: According to the chemical reaction equation,<<Mn>+>+<Mn>+>+<Mn>+<Mn>+<Mn Therefore, as the reaction progressed, the final hydrogen mass curve corresponding to iron would be higher than the corresponding curve of the corresponding iron. 2. ** Reaction of iron and zincate with enough diluted sulfuric acid (the horizontal coordinate is the mass of diluted sulfuric acid)** - Reaction rate: Similarly, the reaction rate of the iron is faster than the reaction rate of the iron. - Mass of hydrogen produced: Because the hydrogen atoms in the hydrogen came from the hydrogen atoms in the diluted sulfuric acid, when the diluted sulfuric acid was sufficient, according to the chemical equation, the mass of hydrogen produced by iron was more for the same mass of iron and iron. The mass curve of hydrogen produced by iron was higher than that of the corresponding curve of iron. 3. ** Reaction of an equal amount of iron and zincate with diluted sulfuric acid of the same mass and solute mass fraction (the horizontal coordinate is the reaction time)** - Reaction rate: The reaction rate of the catalyst is faster than that of iron. The curve of the catalyst is higher than that of iron in the early stage of the reaction. - Mass of hydrogen produced: Since the hydrogen atoms in hydrogen come from the hydrogen atoms in the diluted sulfuric acid, the diluted sulfuric acid is small in quantity and has the same mass and concentration. According to the conservation of atoms, the mass of the finally produced hydrogen is the same, so the two curves are finally on the same level. 4. ** Reaction of a sufficient amount of iron and zincate with diluted sulfuric acid of the same mass and solute mass fraction (the horizontal coordinate is the mass of iron and zincate)** - Reaction rate: The reaction rate of the iron is faster than the reaction rate of the iron, and the slope of the curve of the reaction rate of the iron is larger. - Mass of hydrogen produced: Because there is a small amount of diluted sulfuric acid, according to the conservation of atoms, the mass of hydrogen produced is the same, so the two curves are finally on the same level. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the mechanisms of solid acid reactions?
There were several main mechanisms for solid acid reactions: - In the esterfication reaction, it usually followed the addition-elimination mechanism, the carbonium ion mechanism, and the acyl ion mechanism. - In the conversion reaction, it involves the cracking of the biological mass, molecular rearrangements, oxidization, and dehydration. Solid acid carries out an acid catalyst reaction with the functional groups in the biological mass molecules through its acidic sites to achieve the conversion of the biological mass molecules. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the reactions between methylamine and sulfuric acid?
The reaction between methylamine (CH3NH2) and sulfuric acid (HNO3) will have the following phenomena: ** 1. Phenomenon in the reaction process ** 1. ** Generates heat ** - This was an acid and base neutralizing reaction. The methylamine was an acidic substance, while the sulfuric acid was an acidic substance. When they mix, the reaction will release heat, just like you can feel the temperature change when you mix hot water and cold water, but the heat change in this reaction is more obvious. 2. ** Generates smoke-like substance (possible)** - The reaction might produce some aminium salt, such as methylethylane (CH3NH3NO3). During the reaction process, if the reaction was intense or volatile substances were produced, one might see a phenomenon similar to smoke. It was like the feeling of steam coming out when boiling water, but it was formed by the substances produced by the reaction. 3. ** The color of the solution changes (if there are impurities or special circumstances)** - If there were impurities in methylamine or sulfuric acid, or in a specific environment, the color of the solution after the reaction might change. However, if it was the reaction of pure methylamine and sulfuric acid, the reaction product, methylaminium nitrates, was generally colorless. The color of the solution usually did not change too much, and it was as clear and transparent as water. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the reactions of copper sulfuric acid to people?
The reaction of copper sulfuric acid to humans was mainly reflected in the following aspects: - ** Effects on skin and mucus membrane **: - When it comes into contact with the skin, it may cause local ulcers and corrosion of the skin. Long-term exposure to its dust may cause diseases such as allergic rhinoceros and acute bronchitis. The skin of infants and children is fragile and the risk is greater. - If it comes into contact with the eyes or is inhaled, it will irritate the eyes, nose, mouth, throat and other parts, causing diseases such as inflammation and inflammation. Copper Sulphate solution may cause redness and edema when it comes into contact with the oral mucus membrane. - Long-term contact with copper sulfuric acid solution may cause damage to the skin, causing symptoms such as inflammation and acne. Contact with high-concentration solutions may also cause skin pain and redness. - ** Effects on the digestive tract **: - Ingesting copper sulfuric acid by mistake would corrode the digestive tract, causing nausea, vomiting, abdominal pain, diarrhea, and other digestive symptoms. In severe cases, it could lead to liver and kidney damage or even shock, and could also lead to dehydration. - Even if a small amount of copper sulfuric acid was ingested, it might stimulate the gastric and intestinal membranes, causing burns and cramps in the stomach, causing nausea, vomiting, and even vomiting blood and stool blood. In the long run, it might cause cancer, ulcers, and other diseases. - ** Effect on the whole body **: - The human body ingested a certain dose (11 milligrams/kg) of copper sulfuric acid, which could cause poisoning. If it remained in the stomach for a long time without being cleared, the patient would lose consciousness, accompanied by nausea, diarrhea, headache, and damage to vital organs. - Long-term exposure to copper sulfuric acid may cause a large accumulation of copper ions in the body, leading to insomnia, dizziness and other abnormal symptoms of the nervous system. Serious copper poisoning may cause breathing difficulties and even fainting and other shock symptoms. It may induce heart disease in the elderly and mental disorders in children. - After entering the human body, it was difficult for copper sulfuric acid to be expelled from the body. It mainly adhered to organs such as the liver, gallbladder, and kidneys, which could lead to serious consequences such as organ failure, uremia, and blood diseases. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the reactions between the sulfuric acid solution and the sulfuric acid solution?
During the reaction of sulfuric acid and sulfuric acid, a large amount of Cl2 and nitronyl chloridewas formed. The color of the mixture darkened, and a large amount of reddish-brown gas (with some yellowish-green) was formed. The solution gradually turned brown, and the amount of gas formed increased. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the reactions between hydrogen dioxide and sulfuric acid?
The reaction between the two produced a mixture of water and sulfuric acid. There was no obvious reaction during the reaction to indicate the formation of new substances. From the reaction principle, this reaction followed the law of oxidoreduction. There were no obvious reaction phenomena such as gas generation, color change, or precipitations during the reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>