• Science • People
Non User
 • Locations • Timeline
Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home > Sulfur dioxide

Properties

General

Name Sulfur dioxide
Chemical formula S O2
Appearance Colourless gas

Physical

Formula weight 64.1 amu
Melting point 198 K (-75 °C)
Boiling point 263 K (-10 °C)
Density 1.4 ×103 kg/ m3 (liquid)
Solubility 9.4 g in 100g water

Thermochemistry

ΔfH0gasThe standard enthalpy of formation of a compound is the change of enthalpy that accompanies the formation of 1 mole of that substance from its component elements, at their standard states (the most stable form of the element or compound at 25 degrees Cels -296.84 kJA kilojoule (abbreviation: kJ is a unit of energy equal to 1000 joules. 1 kJ is sufficient to melt 3 g of ice at 0 °C See also SI joule SI prefix Orders of magnitude. Units of energy./ molThe mole (symbol: mol) is one of the seven SI base units and is commonly used in chemistry. It measures the amount of substance of a system and is defined as the amount of substance that contains as many elementary entities as there are atoms in exactly 0
ΔfH0liquid ? kJ/mol
ΔfH0solid ? kJ/mol
S0gas, 1 barIn chemistry, the standard molar entropy is the entropy content of one mole of substance, under conditions of standard temperature and pressure. By comparing the entropies of products and reactants in a chemical reaction, we can determine whether the reac 248.21 J/mol·K
S0liquid, 1 bar ? J/mol·K
S0solid ? J/mol·K

Safety

Ingestion Relatively low toxicity, may cause nausea and vomiting. Long term hazards known.
Inhalation Extreme irritation.
Skin Hazardous when cryogenic or compressed.
Eyes Hazardous when cryogenic or compressed.
More info Hazardous Chemical Database

SIThe International System of Units (symbol: SI (for the French phrase Systeme International d'Unites , is the most widely used system of units. It is used for everyday commerce in virtually every country of the world except the United States, and it is uni units were used where possible. Unless otherwise stated, standard conditions were used. Disclaimer and references

Sulfur dioxide (spelt in British English Sulphur dioxide) has the chemical formula S O2. The gas is irritating to the lungs and is frequently described as smelling of burning sulphur.

It is produced by volcanoes and in various industrial processes. In particular, poor-quality coal and petroleum contain sulfur compounds, and generate sulfur dioxide when burned: the gas reacts with water and atmospheric oxygen to form sulfurous acid ( H2 S O3) and thus Acid rain.

Sulfur dioxide is sometimes used as a preservative in alcoholic drinks.

The word equation for the acid rain reaction:

sulfur dioxide + water = hydrogen sulfite

H2SO3 is also called "hydrogen sulfite" or "sulfurous acid".



Read more »

Topics: Sulfur Dioxide, Sulfuric Acid, Sulfurous Acid...

SulfurSulfur (or sulphur see spelling) is the chemical element in the periodic table that has the symbol S and atomic number 16. An abundant tasteless odorless multivalent non-metal, sulfur is best known as yellow crystals and occurs in many sulfide and sulfateSulfuric acidProperties General Name Sulfuric acid Chemical formula H SO Appearance Colorless liquid Physical Formula weight 98. 1 amu Melting point 283 K (10 °C) Boiling point 610 K (337 °C) Density 1. 8 ×103 kg/ m3 Solubility miscible Thermochemistry ΔH0 -814Sulfur dioxideProperties General Name Sulfur dioxide Chemical formula S O Appearance Colourless gas Physical Formula weight 64. 1 amu Melting point 198 K (-75 °C) Boiling point 263 K (-10 °C) Density 1. 4 ×103 kg/ m3 (liquid) Solubility 9. 4 g in 100g water Thermochemi
Sulfurous acidProperties General Name Sulfurous acid Chemical formula H SO Appearance Clear, colorless solution with a sulfurous odor. Physical Formula weight 82. 07 amu Density 1. 03 ×103 kg/ m3 Solubility Very soluble Safety Ingestion Severe and permanent damage maySulfur hexafluorideSulfur hexafluoride (SF) is a gas that consists of one part sulfur and six parts fluorine. It is colorless, odorless, non- toxic, and non- flammable. It is soluble in water and some other liquids. It is generally transported as a liquified compressed gas.Sulfur dyeSulfur dyes are the biggest volume dyes manufactured for cotton. They are cheap, generally have good wash-fastness and are easy to apply. The dyes are absorbed by cotton from a bath containing sulfide and are insolubilised within the fibre by oxidation.
Sulfur trioxide  
Non User