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,
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