CHEM 101L Chapter Notes - Chapter 6.7: Ionic Compound, Diesel Fuel, Sulfur Dioxide

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CHEM 101 Reactions with Gas Formations and Introduction of Unstable Ionic
Products
We have seen that there are reactions that yield a precipitate (solid) and water
(liquid), so all that’s left to discuss is the reaction that produces the third state of
matter, gas. These reactions that form gas are known as gas formation reactions
and they commonly occur when we have an unstable ionic compound in one of our
products of the reaction.
Examples of unstable ionic compounds are typically acids:
H2SO4 and H2CO3 are the most common unstable ionic compounds and they are
also very relevant in the field of environmental science. The reason behind that
will be discussed shortly.
Unstable ions break down into the positive cation’s natural state gas and into the
di-oxidized form of the polyatomic ion. For instance, sulfuric acid breaks down
into water and sulfur dioxide, and carbonic acid breaks down into carbon dioxide
and water. The most prevalent in environmental science is carbonic acid and it can
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