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The process by which solvent molecules pass through a semipermable membrane from a dilute solution into a more concentrated solution.

 

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Specific Gravity

The ratio of the density of a substance to the density of water.

Aryl Group

Group of atoms remaining after a hydrogen atom is removed from the aromatic system.

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

Absolute Zero

The zero point on the absolute temperature scale, -273.15°C or 0 K, theoretically, the temperature at which molecular motion ceases. The concept of an absolute zero temperature was first deduced from experiments with gases. When a fixed volume of gas is cooled, its pressure decreases with its temperature. Absolute zero physically possesses quantum mechanical zero-point energy.

Ion

An atom or a group of atoms that carries an electric charge.

Hydration Energy

The energy change accompanying the hydration of a mole of gase and ions.

Lewis Acid

Any species that can accept a share in an electron pair.

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Flotation

Method by which hydrophobic (water-repelling) particles of an ore are separated from hydrophilic (water-attracting) particles of a metallurgical pretreatment process.

Can water burn?

It’s known that water consists of atoms of molecules of oxygen and hydrogen. Since any compound with oxygen indicates the ability of the substance to burn, water is no exception. Thus, water has a surprising property of already "burnt out" compound.