Why is H2Se more acidic than H2S???

The aqueous solution of H2SE is more acidic than H2S.

The acidity of anaerobic acid depends on the strength of non-metallic properties, and the stronger the non-metallic properties are with hydrogen elements.

The stronger the binding capacity, the more difficult it is to electrolyze in aqueous solution and the less acidic it is.

In hydride (H2R), R is the lowest valence at -2 and is only reducible.

As the number of electron shells increases, the atomic radius.

As the increase of R, the ability to lose electrons increases sequentially, so the reducibility of hydride increases sequentially, i.e., H2O H2S H2Se H2Te, just like Hf Hcl Hbr Hi

its anion. The reducibility is: O2 S2 Se2 Te2 F Cl br I

As for the acidity of the aqueous solution of the hydride of the same element, it should be said that there are many influencing factors, but it mainly depends on the binding force of R to H+ in H2R (R is directly connected to H), the smaller the binding force of R to H+, the easier it is to release H, the stronger the acidity, from O-Te, the atomic radius increases, the ability to obtain electrons decreases, the binding force on H decreases, and the ability to release H increases. Therefore, the acidity of the aqueous solution of hydride gradually increases. i.e., H2S H2Se H2Te, as HF HCL Hi HBR.

H-Se is not as strong as H-S, and the former chemical bonds are more likely to break in water, dissociating hydrogen ions in water, so it is more acidic.

H2S is hydrogen sulfide.

Hydrogen sulfide is an inorganic compound with the molecular formula H2S and a molecular weight of , standard condition.

It is a flammable acid gas, colorless, with the smell of rotten eggs at low concentration, and sulfur smell when the concentration is very low, and highly toxic skin bump. The aqueous solution is hydrosulfuric acid.

It is weaker acidic, weaker than carbonic acid, but stronger than boric acid. Soluble in water, soluble in alcohols, petroleum solvents and **.

Hydrogen sulfide is a flammable and hazardous chemical.

Mixed with air, the wheel can form a first-class mixture, which can cause combustion in case of open flame and high heat energy. Hydrogen sulfide is an important chemical raw material.

The main uses of H2S.

It is used in the synthesis of phosphors.

Manufacture of electric discharge, light conductor, photoelectric meter, etc. Organic synthesis of reducing agents.

It is used for metal refining, pesticides, medicine, and catalyst regeneration. General purpose reagents. Preparation of various sulfides.

It is used in the manufacture of inorganic sulfides and is also used in chemical analysis such as the identification of metal ions.

The above content reference: Encyclopedia - Hydrogen sulfide.

H2S isHydrogen sulfide, hydrogen sulfide is an inorganic compound.

Hydrogen sulfide gas itself is not an acid, but hydrogen sulfide ionizes step by step when dissolved in water and is a weak electrolyte.

Its aqueous solution is hydrosulfide, which is a dibasic weak acid. Mori Hydrosulfonic Acid is weakly acidic, weaker than carbonic acid, but stronger than boric acid. Hydrogen sulfide is a flammable and hazardous chemical.

Mixed with air can form a ** mixture, which can cause combustion in case of open flame and high heat energy. Hydrogen sulfide is an important chemical raw material.

Uses of hydrogen sulfide

Hydrogen sulfide is used in the synthesis of phosphors.

Or it is used in the manufacture of electric discharge, light conductor, photoelectric exposure rock search meter, etc. It is used as a reducing agent for organic synthesis.

It is used in metal refining, pesticides, medicine, and catalyst regeneration.

Hydrogen sulfide is rarely used in industrial production, and exposure to hydrogen sulfide is generally a chemical reaction.

and products of the natural breakdown of proteins, or products in the form of impurities. Industries with high exposure to hydrogen sulfide include wastewater treatment, papermaking, petroleum processing, fertilizer manufacturing, chemical fiber manufacturing, and some chemical raw material manufacturing.

The above content reference: Encyclopedia - sulfide this jujube Qing hydrogen.

H2SO3 is a weak acid. Sulfurous acid is a weak acid, but it is more acidic than most weak acids, so it is also called a medium-strong acid. Sulfurous acid is an aqueous solution of sulfur dioxide, with the chemical formula H2SO3, which is a colorless and transparent liquid, easy to decompose, and has the suffocating odor of sulfur dioxide.

It can be used as analytical reagents, reducing agents and preservatives, etc., sulfurous acid has both reducing and oxidizing properties, but it is mainly reducing. The sulfurous acid aqueous solution will decompose when it is irradiated to ultraviolet light for a long time or heated to 140 °C.

Uses of sulfurous acidSodium sulfite can be used for the microanalytical determination of tellurium and niobium; used as a general analytical reagent; It is used in laboratories for the preparation of sulfur dioxide; Fragrance and dye reducing agent, used to make cellulose sulfite, sodium thiosulfate, preservatives, chlorination agents, etc.

As a deoxidizer and bleaching agent in the printing and dyeing industry, it is used in the boiling of various cotton fabrics, which can prevent the local oxidation of cotton cloth fibers and affect the strength of the fibers, and improve the whiteness of the boiled fabrics.

The above content refers to Encyclopedia-H2SO3

1. Because H2S ionization is incomplete.

2. Because the pH of mol L H2S solution is less than 13, because Na2S solution is alkaline.

4. Because of the conductivity of H2S and H2SO4 solutions at the same concentration: there is a lot of evidence for H2S H2SO4.