Acid oxidises react with water to form acid, such as carbon dioxide reacting with water to form carbolic acid (CO <2>+ H <2> O = H <2> CO). There may be no obvious phenomenon during the reaction. If the solution is tested with litmus test solution, the solution will turn red. Alkaline oxides react with water to form alkalites. For example, calcium dioxide reacts with water to form calcium dioxide (CaOx + H2O = CaOx). The reaction will release a lot of heat, and the solution may become turbid (CaOx is slightly dissolved in water). For example, the reaction between acidic and basic oxides can produce salt. For example, the reaction of calcium dioxide and silica at high temperature can produce calcium meta-silicon (CaSiO2 = CaSiO2). This reaction is usually carried out under high temperature conditions, and the reaction phenomenon may include changes in the solid state. There was no direct reaction between the acid, the base, or the salt. Read more exciting novels for free
The acid and base reactions did not necessarily produce water. For example, acid salt decomposed into normal salt when heated, crystalline hydrates decomposed into waterless normal salt when heated, metals reacted with concentrated sulfuric acid or sulfuric acid, and metal oxide-reduction reactions occurred with acid. These reactions belonged to the alkali-base reaction, but they did not produce water. The reason was that different reactions had different reaction mechanisms and the nature of material changes. During these reactions, the reacting substances reacted according to their respective chemical properties, resulting in the reaction result not producing water. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
1. **二氧化碳与碱的反应** - 二氧化碳能与可溶性碱反应,产物一般是碳酸盐。例如二氧化碳与氢氧化钠反应:当二氧化碳少量时,\(2NaOH+CO_{2}=Na_{2}CO_{3}+H_{2}O\);二氧化碳与氢氧化钙反应\(Ca(OH)_{2}+CO_{2}=CaCO_{3}+H_{2}O\)。不过并不是所有的碱都能和二氧化碳反应,只有可溶性碱能与二氧化碳发生反应。 2. **二氧化碳与酸的反应** - 二氧化碳不与酸反应,从酸碱性角度看,酸和酸不反应,并且二氧化碳既没有强氧化性也没有强还原性,所以和氧化/还原性酸也不反应。 3. **二氧化碳与水的反应** - 二氧化碳遇到水时发生化学变化,产生碳酸,反应方程式为\(CO_{2}+H_{2}O = H_{2}CO_{3}\),但碳酸不稳定,受热易分解,\(H_{2}CO_{3}\triangleq CO_{2}\uparrow+H_{2}O\)。 <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>
Based on context alone 1. Reaction of carbon dioxide and water: - The chemical equation is [CO2 + H2O = H2CO3]. The carbon dioxide is an acidic oxide-like compound. It can react with water to form carbolic acid, which is a dibasic weak acid. 2. Sulfur dioxide and water reaction: - The reaction equation is [SO2 + H2O = H2SO3]. Sulfur dioxide is an acidic oxide-type compound, and the reaction produces sulfurous acid, which is a medium-strong acid. 3. Sulfur Trioxide-Water Reaction: - The chemical equation is [SO3 + H2O = H2SO4]. Sulfur trioxid is an acidic oxide-like compound. It can react with water to form sulfuric acid, which is a strong acid. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
1. ** Reaction of metal and acid (horizontal coordinate is reaction time, vertical coordinate is hydrogen mass)** - In terms of reaction speed, the greater the slope, the faster the reaction speed. The order of metal activity can be determined according to the inclination of the curve. The greater the inclination, the stronger the metal activity. - In terms of hydrogen production: - When the metal is in excess and the acid (of 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. - When the acid (with the same concentration) is sufficient, the quality of the generated hydrogen is determined by the quality of the metal, and the relationship is as follows: 2. ** Reaction between metal and acid (x-axis is the mass of acid, y-axis is the mass of hydrogen)** - The situation was different in different areas: - When 0 < m <a (excessive or just complete reaction, iron, magnetism, and aluminum are all excessive), the quality of the generated hydrogen has a specific situation (it needs to be judged according to the specific reaction data, such as the chemical relationship between the metal and the acid reaction). - When a < m <b (insufficient amount of iron, excessive amount of iron or just complete reaction, excessive amount of aluminum and aluminum), the quality of the generated hydrogen gas also has a corresponding situation (also needs to be judged according to the specific conditions of the reaction). - When b < m <c (there is insufficient iron and iron, excessive or just complete reaction of aluminum), the quality of hydrogen produced also has a corresponding situation. 3. ** Reaction between metal and acid (x-axis is the mass of metal, y-axis 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. - As the metal continued to increase, the amount of metal would not be enough, and the quality of the hydrogen produced would be determined by the acid. 4. ** Reaction between metal and salt solution (Take the reaction between a piece of metal and a solution of copper sulfuric acid as an example, from the perspective of solid and solution quality)** - Solid mass change: During the reaction, the solid mass changes from 65 (relative atomic mass of copper) to 64 (relative atomic mass of copper). The solid mass decreases. After the reaction, the solid mass remains unchanged. - Change of solution mass: The solute mass changes from 160 (relative molecular mass of copper sulfuric acid) to 161 (relative molecular mass of sulfuric acid). The mass of the solution increases while the mass of the solution remains unchanged. After the reaction, the mass of the solution remains unchanged. 5. ** Reaction between metal and salt solution (Take the reaction between copper sheet and silver nitrates solution as an example, from the perspective of solid and solution quality)** - Solid mass change: The mass of the solid changes from 64 to 216 (the relative atomic mass of silver). The mass of the solid increases. After the reaction, the mass of the solid remains unchanged. - Change of solution mass: The solute mass changed from 340 (relative molecular mass of silver nitrates) to 188 (relative molecular mass of copper nitrates). The mass of the solution decreased while the mass of the solution remained unchanged. After the reaction, the mass of the solution remained unchanged. In short, the image change of the reaction between metal and acid, base, and salt involved many factors such as the reaction rate and the quality of the resulting substance. It was closely related to the activity of the metal and the amount of the reagent (the amount of metal and acid or salt solution). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Carbonic acid does not react with NaCl3. According to the possible reactions, NaCl2 + H2CO2 = NaHCO2 + HQ or 2NaCl2 + H2CO2 = Na CO2 + 2HQ, this was a weak acid making a strong acid, which was impossible to happen. Moreover, the reverse reaction of these two equations could be carried out to eventually produce NaCl2, H2O, and CO2. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
1. ** Condition of the metathesis reaction ** - For acid + base = salt + water (neutralizing reaction), at least one of the acid and base involved in the reaction was easily dissolved in water. - Acid + salt = new acid + new salt. If the salt in the reagent is difficult to dissolve, then the product must be dissolved. The reaction between acid and salt is a metathesis reaction in an aquatic solution. The conditions for the metathesis reaction must be met.(There are precipitations, gas, or water). For example, when limestone (CaCO) is used to produce CO2 in the laboratory, only sulfuric acid can be used, because the CaSOformed by the reaction of CaCOand sulfuric acid is slightly dissolved and will cover the surface of CaCOto prevent the reaction from continuing. It is necessary to master the reaction of weak acid salt (such as Na <anno data-annotation-id ="0000004 - 4445 - 400a-400a-800000005e"> CO2 </anno>, CaCO) with strong acid (HQ, H </anno> SO, HNO), and the reaction to form BaSOand AgCl. - Alkali + salt = new base + new salt. The base and salt participating in the reaction must be water-dissolved, and there must be a hard-to-dissolve substance or a volatile base (NH2·H2 O) in the product. - Salt + salt = two new types of salt. The two types of salt participating in the reaction must be water-dissolved. If one of the products was a hard-to-dissolve salt, the reaction could proceed. 2. ** Reaction conditions of acid and basic oxygen ** - Strong acid (H <2> SO2 <3>, HNO2 <3>, and HC1) can react with all basic oxide-based compounds, while weak acid (H <2> CO2 <3>, H <2> S <3>, etc.) can only react with active metal oxide-based compounds. 3. ** Reaction conditions of acidic oxides and alkalites ** - Under normal conditions, acidic compounds can react with strong base solutions, but SiO2 needs to be heated to react with a solid form of NaOx (or a solid form of KhOx). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Dilute sulfuric acid and salt water did not react. Dilute sulfuric acid was an acid, and it was acidic. Salt water was an water solution of NaCl3. When the two were mixed, no new substance would be formed. Therefore, there was no such thing as a reaction, and there was no way to judge the reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The chemical equation of the reaction between acid and indicator: KHIn/(H+)=(In-)/(HIn)=a/(a-c). Using litmus as an example, the equilibrium of the ions was HIn = In- + H+. However, it should be noted that the acid and base indicator will change color when it meets an acidic or basic solution. The actual color change is the acid and base indicator, not the solution itself. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction between the two could not be explained, as the reaction between the two was almost non-existent. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction of sulfuric acid with other substances could not produce soda and water. The reaction of sulfuric acid with carbonates or hydrogen carbonates would produce the corresponding chlorites, water, and carbon dioxide. For example, the reaction of sulfuric acid with carbon dioxide would produce carbon dioxide, water, and carbon dioxide, instead of carbon dioxide and water. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>