The chemical formula of ferric thionirite at high temperature, the chemical equation of the reaction

2FeSO4·7H2O==High Temperature==Fe2O3+SO2 +SO3 +14H2O

Ferrous sulfate, with the molecular formula, contains iron and sulfur, is a blue-green crystal, commonly known as "green alum". Ferrous sulfate is often chemically unstable, and it is easy to lose water and oxidize to turn brown iron sulfate, especially under the conditions of high temperature, strong sunlight or the presence of alkaline substances. The water used to dissolve ferrous sulfate loses its potency if the pH value is greater than that.

If ferrous sulfate turns from blue-green to brown due to poor preservation, the ferrous sulfate has been oxidized to iron sulfate and cannot be absorbed and utilized by flowers and plants. The prevention and control methods are as follows: 1. Adjust the pH of the water dissolved in ferrous sulfate to about pH4.

The method is to add high-quality rice vinegar or dilute sulfuric acid to the water, measure the pH of the water with litmus paper, start without adding a little, test once, until the pH value of the water is adjusted to 4. Then put ferrous sulfate solution and then use litmus paper to measure again, if the pH value is still about 4, you can use this ferrous sulfate solution to water the flowers that are yellow due to iron deficiency. In general, as long as the flowers and plants are yellowed due to iron deficiency, the pH value in the pot is bound to be higher, and the pH value of the potting soil will be reduced by watering with this low pH Zhangjiajie Zhangjiajie ferrous sulfate solution, so as to achieve the purpose of supplementing iron elements for iron-deficient flowers.

2. Make ferrous sulfate into chelate iron fertilizer and apply it. Disodium ethylenediaminetetraacetic acid (C10H14N2O8Na2), which can be purchased in general chemical reagent stores, is chemically called a "chelating agent". The advantage of chelating agents is that the metal that binds to it is not easily precipitated by chemical reactions, but can be used by plants.

Ferric thionite decomposes at high temperature and finally forms ferric oxide.

The chemical equation for the reaction of ferrous sulfide with concentrated sulfuric acid is Fes+H2SO4 FeSO4+H2S. Due to the strong oxidizing property of concentrated sulfuric acid, ferrous sulfate can be oxidized to Fe3(SO4)2, and H2S is oxidized to S02 and S, so there will be an equation of Fes+H2SO4=Fe2(SO4)3+SO2+S+H2O.

The oxide layer on the surface of ferrous sulfide can be dissolved by heating with hydrochloric acid of 1 1 to dissolve the ferric oxide on the surface into soluble iron salt and ferrous salt, and the sulfur adhesion attached to the surface of ferrous sulfide is weakened, and the sulfur will be separated from the surface of ferrous sulfide due to the beating of the solid when the solution boils. Then the ferrous sulfide solid is taken out and rinsed to obtain a purer convex and concave ferrous sulfide solid.

The chemical formula of ferric sulphate is Fe (SO).Ferric sulfate is an inorganic substance with the molecular formula Fe(SO) and a molecular weight. Off-white or light yellow powder, easy to absorb moisture, soluble in water, slightly soluble in ethanol, aqueous solution is reddish-brown. The valency of the iron element in iron sulfate is +3 valence, and the aqueous solution is reddish-brown.

Nature

The metathesis reaction of iron sulfate depends on the valency of the iron element in the original reactant, for example, ferrous chloride and sodium hydroxide solution react to form ferrous hydroxide and sodium chloride, and iron sulfate and sodium hydroxide react to form sodium sulfate and iron hydroxide.

Ferric sulfate is sensitive to light and easily absorbs moisture. It dissolves slowly in water, but dissolves quickly when there is a trace of ferrous sulfate in water, slightly soluble in ethanol, almost insoluble in acetone and ethyl acetate.

The above content reference: Encyclopedia - Iron Sulfate.

The chemical formula of ferrous sulfate Feso4 is commonly known as ferrous sulfate Feso4·7H2O, which contains seven crystalline waters, commonly known as alum. Light blue-green monoclinic crystals, density, 64 melted in crystals and water with careful dust. Soluble in water, the aqueous solution is acidic.

It is gradually weathered in the air and at the same time oxidized to a yellowish-brown basic iron salt. At 300 years of filial piety, all the crystal water is lost, and the anhydrous matter is white powder.