What Is A Hydrogen Sulfide?

Answer 1

Hydrogen sulfide is a gas. It's similar in structure to water, but has S instead of O in water. The formula is H2S.

Unlinke H2O, it's a gas. Water, having similar structure as H2S but is a liquid: the reason for this can be attributed to the hydrogen bonding present in H2O. Hydrogen bonding is absent in H2S. It's a pungent smelling gas.

There's a famous appratus to generate this in laboratory called the Gibb's Apparatus, one of the oldest chemical equipments known. Fools gold and HCl are mixed to give H2S.

Answer 2

hydrogen sulphide H2S, is a colorless, toxic, flammable gas that is responsible for the foul odor of rotten eggs and flatulence.

Hydrogen sulfide is also known as sulfane, sulfur hydride, sour gas, sulfurated hydrogen, hydrosulfuric acid, sewer gas and stink damp. IUPAC accepts the names "hydrogen sulfide" and "sulfane"; the latter one is used exclusively when naming more complicated compounds. It often results when bacteria break down organic matter in the absence of oxygen, such as in swamps, and sewers (alongside the process of anaerobic digestion). It also occurs in volcanic gases, natural gas and some well waters.

It can be identified in relatively low concentrations, by a characteristic "rotten-egg" odour. Hydrogen sulphide is approximately 20 percent heavier than air, with a specific gravity of 1.19. Hydrogen sulphide odours can be recognized in concentrations of less than 1 mg/kg (air). The odour of hydrogen sulphide will increase as the gas becomes more concentrated. However, in concentrations of 150 or greater mg/kg (air), a person's ability to detect the gas is affected by temporary paralysis of the olefactory nerves in the nose. Owing to this unique property of Hydrogen sulphide, relying totally on the sense of smell to warn against the gas, can be extremely dangerous. In high concentrations, the ability to smell the gas is lost instantaneously, since its a highly toxic gas which interferes with cellular respiration just like carbon monoxide and hydrogen cyanide.

The disappearance of the odour could mean that the gas concentrations have increased. As a toxic chemical, in high concentrations it will lead to almost instantaneous poisoning and death. High concentrations will result in the complete arrest of respiration. A person over come by this gas should promptly be removed from the contaminated area and given immediate artificial respiration.

It can be produced in the lab by the reaction of calcium sulphide, magnesium chloride and water (to produce calcium chloridde, magnessium hydroixde and hydrogen sulphide). Simillarly, it can be produced from the reaction between iron(II)sulphide and dilute hydrochloric acid.

Answer 3

comes from decomposing organic matter, a good example of hydrogen sulfide is that rotten egg smell you can sometimes get in your drinking water, well water can have a hydrogen sulfide smell to it when it first comes out of the ground, Chlorination of water removes the smell, as well as working as an antiseptic for bacteria.

Answer 4

its hydrogen sulphide and not hydrogen sulfide. its a gas smelling of rotten eggs harmful for humans and has a formula H2S

Answer 5

H2S

Hydrogen sulphide, H2S, is a colorless, toxic, flammable gas that is responsible for the foul odor of rotten eggs and flatulence. It often results when bacteria break down organic matter in the absence of oxygen, such as in swamps, and sewers (alongside the process of anaerobic digestion). It also occurs in volcanic gases, natural gas and some well waters.

Answer 6

Hydrogen Sulfide is a colorless, transparent gas with a characteristic of a rotten-egg odor at low concentrations and not detectable by odor at high concentrations.

Answer 7

H2S - highly toxic, smells of rotten eggs; Interestingly, if it is at a lethal concentration, you can't smell it - there was that west african volcanic lake a few years ago that kicked out a load of H2S and killed lots of folk living around the lake region. Think it was in Cameroon.

Answer 8

A toxic Gas that smells of rotten eggs