Desperately for Taciobio, urgent! Is sodium thiosulfate in aqueous solution alkaline?

A S S+O2 SO2 S+Fe Fe S S+2Cu Cu 2S

Diso21 acid oxide SO2 H2O H2SO3

so2 + ca(oh)2 ＝ caso3 + h2o so2+na2so3+h2o==2nahso3

2Reducibility: SO2 BR2 + 2H2O H2SO4 + 2HBR

2so2 + o2 2so3 so2+h2o2==h2so4

so2+2fe3+ +2h2o==2fe3++so42-+4h+

3. Oxidation: SO2 +2H2S = = 3S + H2O

Laboratory-produced SO2: Na2SO3 + H2SO4 (concentrated) Na2SO4 + H2O + SO2

3. H2S is prepared in the laboratory

Principle: Fes + H2SO4 (dilute) FeSo4 + H2S

Test: H2S + CuSO4 Cus + H2SO4

Exhaust treatment: H2S + 2NaOH Na2S + H2O

TetraC + 2H2SO4 (concentrated) CO2 + 2SO2 + 2H2O

Cu 2H2SO4 (concentrated) CuSO4 SO2 Deca2H2O

5. Exposure to sulfuric acid.

S + O2 SO2 or 4FeS2 + 11O2 2Fe2O3 + 8SO2

2so2 + o2 2so3

so3 + h2o ＝ h2so4

6. Coal-fired flue gas desulfurization.

Limestone gypsum caCO3 cao+CO2 ; cao + so2 ＝ caso3

so2 + ca(oh)2 ＝ caso3 + h2o 2caso3 + o2 ＝ 2caso4

Ammonia desulfurization method.

so2 +2 nh3＋h2o==(nh4)2so3 so2 + nh3＋h2o==nh4hso3

2(nh4)2so3+ o2==2(nh4)2so4

Sulfur is very important for the growth and development of crops, and is the fourth important nutrient after nitrogen, phosphorus and potassium, and belongs to the macroelements of crops along with nitrogen, phosphorus and potassium. Sulfur is the main component that makes up proteins and enzymes and is also involved in redox reactions in plants. Sulfur can promote the nitrogen fixation of rhizobia and autogenous nitrogen-fixing bacteria, and can increase the cold and drought resistance of crops and improve water use efficiency.

Amount of use. Make matches, make reducing agents.

Gaseous sulfur elemental, solid and liquid sulfur is made up of single atoms, while gaseous sulfur is made of molecules Sulfur is usually a pale yellow crystal, with orange, colorless, reddish-brown sulfur vapor, they are all elemental sulfur, but the number of sulfur atoms in each molecule is different.

There are three types of sulfur vapor that take on different colors.

Colorless sulfur vapor is made up of 4 sulfur atoms.

Reddish-brown sulfur vapor is made up of 6 sulfur atoms.

Orange sulfur vapor is made up of 8 sulfur atoms.

Monovalent hydrochloride, potassium, sodium silver, divalent magnesium oxygen, calcium, barium, zinc, limb defeat, trivalent elements boron and aluminum, four carbon and silicon to remember, 246 sulfur to remember, distinguish between positive and negative.

--- h -li -na -k -ag -nh4 (the number at the end is written in the bottom right corner, you know).

1. Hydrogen, lithium, sodium, potassium, silver, ammonium.

fe mg ba ca cu hg zn

2. Valent (sub)iron, magnesium, barium, calcium, copper, mercury, zinc.

f -cl -br- i --oh

1-valent fluorochlorine, bromine, iodine, hydroxide.

o s p oxygen sulfur negative two flush buried stool, phosphorus positive five.

Fe al iron and aluminum are three, to remember.

co3 so4 no3 po4

Carbonate disperses sulfur liquids such as acids, nitrates, and phosphates.

The aqueous solution is weakly alkaline and soluble in water, and it weathers in dry air above 33 and loses crystal water.

48 More than crystalline water dissolved in itself, easy to deliquescent in moist air. It is relatively stable in neutral and alkaline solutions, and will decompose rapidly in acidic solutions.

The aqueous solution of sodium thiosulfate has a pH of about 9 to 10 and is alkaline.

The aqueous solution of sodium thiosulfate is alkaline.

Thiosulfuric acid is acidic, so the corresponding alkali: sodium thiosulfate is alkaline.

Be. Because the aqueous solution of Na2S2O3 is alkaline, this is because S2O32-hydrolysis increases the concentration of OH- in the solution, so it is alkaline.

Colorless and transparent crystals, easily soluble in water, aqueous solution is weakly alkaline (S2O32-hydrolysis, which increases the concentration of OH- in the solution) Weathering and losing crystal water in dry air above 33 More than 48 soluble in its own crystal water, easy to deliquescent in humid air. It is relatively stable in medium and alkaline solutions, and will decompose rapidly in acidic solutions

It is alkaline, and 1mol L of sodium thiosulfate is about pH and has been tested before.

It is alkaline and reacts in an acidic solution to form sulfur.

The aqueous solution of sodium thiosulfate is alkaline.

Baking soda is a colorless and transparent crystal, soluble in water, and the aqueous solution is weakly alkaline It weathers in dry air above 33 and loses crystal water 48 or more dissolves in its own crystal water, which is easy to deliquescent in humid air. It is relatively stable in neutral and alkaline solutions, and will decompose rapidly in acidic solutions.

Yes, thiosulfate is a poly-weak acid acid with strong primary hydrolysis ability.

There are indeed many such companies, but the good results are only those in Jiangsu, such as Jiangyin Bama Thermal Equipment Company, and there has been no problem until the current Bi Lansen hand mu.