The chemical equation for the reaction between Na and water is 2Na +2H ^O = 2Na + H ^. When using a single-line bridge to represent the gain and loss of electrons, the arrow points from Na to H ^, and the arrow is marked with 2e. The reaction phenomenon was that the Na floated on the surface of the water (the density of Na was lower than that of water), quickly melted into a shiny ball (the melting point of Na was low and the reaction gave off heat), swam around on the surface of the water (the reaction produced hydrogen gas to push Na to swim), hissed (the reaction was intense and produced gas), and the solution turned red (the formation of Na_2 oh turned the phenylephalen red). However, these reaction phenomena could not be expressed by a single-line bridge. The single-line bridge could only indicate the direction and number of electrons transferred in the reaction. Read more exciting novels for free
There is no chemical reaction between NaCl2 and magnesiumcarbonate2. In chemistry, the conditions for metathesis reactions to occur were the formation of precipitations, gases, or water. After mixing the two, the conditions for the metathesis reaction were not met, so there was no reaction, no reaction equation, and no reaction phenomenon. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
First, the reaction between the water and the salt would be observed. The salt would float on the surface of the water and melt into a silver-white ball. It would swim around on the surface of the water, accompanied by a sizzling sound. The reaction would produce hydrogen gas and then the reaction between the aluminum and the solution of the salt and water would produce hydrogen gas. The total reaction was the reaction of aluminum and water to produce meta-aluminum aluminum and hydrogen. There was a phenomenon of hydrogen formation during the reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Bromine water has strong oxidisation and can catalyze cane sugar. However, the reference materials did not mention the reaction phenomenon, and the reaction type was an oxidization reaction. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
When there was a small amount of oxygen, the chemical equation for the reaction between hydrogen sulfur and oxygen was: 2H2S + O2 = ignition = 2S +2H2O. The reaction phenomenon was that hydrogen hydrogen would burn in oxygen to produce a light yellow solid (sulfur), and at the same time, water would be produced. When there is an excess of oxygen, the chemical equation for the reaction between hydrogen sulfur and oxygen is: 2H2S +3O2 = ignition = 2SO2 + 2H2O. The reaction phenomenon was that hydrogen hydrogen would burn in oxygen to produce a pungent gas (sulfur dioxide) and water. The chemical equation for the reaction of hydrogen hydrogen, oxygen, and water was not found. Only the equation for the reaction of hydrogen hydrogen and oxygen (divided into two cases of small and excessive oxygen) was found. In these reactions, water was the reaction product rather than the reagent. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Ba(NO3)2 is easily dissolved in water and does not react with water. It will not produce gas, so there is no gas formation phenomenon. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
When a small amount of water was added, blue copper decahydrate crystals would be formed; when excessive water was added, the crystals would dissolve and form a blue solution. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction between the acid and the acid would result in the formation of a sulfuric acid deposit. The reaction equation was Na Chi SiOx +2HNOOx == H Chi SiOx +2NaNOOx, and the reaction phenomenon was the formation of a white deposit. In this reaction, the sulfuric acid did not show any oxidisation, but only showed its acidic nature. This was because the silicon in the silica was already in the highest state, and the acidic nature of the sulfuric acid was stronger than that of the sulfuric acid, which was in line with the principle of making a weak acid from a strong acid. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The reaction of the two reagents would produce a light green deposit (nickelous carbonite) and then a solution of the two reagents. However, if the test tube was shaken, the deposit would dissolve, regardless of the amount of the reagent. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
There is no chemical reaction between the two of them. In terms of chemical principles, the conditions for the metathesis reaction to occur were the formation of precipitations, gases, or water. The mixture of the two did not meet the conditions for the metathesis reaction to occur, so there would be no reaction. Therefore, there was no reaction equation, reaction phenomenon, and phenomenon analysis. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
In daily life, the phenomenon of the reaction between calcium dioxide and water can be obtained by the following methods: 1. Take an appropriate amount of calcium dioxide (such as quicklime) and slowly add it to the water. You can observe that the water will gradually heat up because the reaction is an exothermic process and may even cause the water to boil. 2. During the reaction process, it will form calcium hydrogen. Since the calcium hydrogen is slightly dissolved in water, the solution may become turbid and white deposits may appear. 3. If there was carbon dioxide and other gases dissolved in the water, bubbles might be seen. This was because the carbon dioxide reacted with the formed calcium hydrogen. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>