Acid gas

Acid gas is a gas that makes an acidic solution when mixed with water. In the natural gas and petroleum industries, it usually means a mixture of carbon dioxide and hydrogen sulfide. If the gas contains a large amount of hydrogen sulfide, it is also called sour gas.

Acid gas is a problem for purifying and using fossil fuels. Hydrogen sulfide reacts with many types of metal, making the metal weaker and eventually cracking it. Burning fuels containing acid gas can release sulfur dioxide, an acid gas that causes acid rain.

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Category:Acids
Category:Natural gas