Sulfuric Acid (DOC download)

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        <p>Sulfuric acid (also spelled sulphuric acid) is a strong
mineral acid with the molecular formula H2SO4. It is soluble in water at
all concentrations. It was once known as oil of vitriol, coined by the
8th-century alchemist Jabir ibn Hayyan (Geber) after his discovery of the
chemical.[1]</p>
<p>Pure sulfuric acid is a colorless and tasteless liquid oil. Commonly
used in H2SO4 concentrated sulphuric acid content of 98.3 percent, its
density of 1.84 g cm-3, of its The amount of concentration to 18.4 mol
L-1. Sulphuric acid is a highly difficult to boiling point volatile acid,
soluble in water, can be arbitrary and water than the immiscibility.
Concentrated sulphuric acid solution When the release of a lot of heat,
so should be concentrated sulphuric acid diluted "acid into the water,
along the wall, slowly down, constantly stirred." If the concentrated
sulphuric acid in the Access to SO3, will lead to "smoke" phenomenon,
that more than 98.3 percent of the sulfuric acid known as the "smoke
sulfate" Absorbent A bottle of concentrated sulphuric acid placed in
the air, their quality will increase, the density will decrease, reducing
the concentration, size larger, it is because concentrated sulphuric acid
with water absorption. ⑴ on sulfuric acid, water absorption is the
nature of concentrated sulphuric acid, rather than dilute sulfuric acid
in nature. ⑵ the suction of concentrated sulphuric acid, which is
concentrated sulphuric acid molecule with a strong combination of water
molecules, generating a series of the hydrate stability, and emit a lot
of heat: H2SO4 + nH2O == H2SO4 nH2O, the water is concentrated sulphuric
acid is a chemical process Changes in the process of water absorption is
the chemical nature of concentrated sulphuric acid. ⑶ concentrated
sulphuric acid can not only absorb the general state of free water (such
as in the air and water), but also absorb certain crystalline hydrates
(such as CuSO4 5H2O, Na2CO3 10H2O) of water.</p>        <!--
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posted:8/9/2011
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