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For a reversible reaction, aA + bB cC + dD the product of the concentrations of the products (species on the right), each raised to the power that corresponds to its coefficient in the balanced chemical equation, divided by the product of the concentrations of reactants (species on the left), each raised to the power that corresponds to its coefficient in the balanced chemical equation. At equilibrium the mass action expression is equal to K, at other times it is Q.[C]c[D]d [A]a[B]b = Q, or at equilibrium K.

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Electrolytic Conduction

Conduction of electrical current by ions through a solution or pure liquid.

Donor Atom

A ligand atom whose electrons are shared with a Lewis acid.

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20 interesting chemistry facts.

Complex Ions

Ions resulting from the formation of coordinate covalent bonds between simple ions and other ions or molecules.


Resistance offered by the molecules of a liquid to flow is termed as viscosity.

Strong Field Ligand

Ligand that exerts a strong crystal or ligand electrical field and generally forms low spin complexes with metal ions when possible.


The heat content of a specific amount of substance, defined as E= PV.


Hydrolysis of esters in the presence of strong soluable bases.

DP number

The degree of polymerization, the average number of monomer units per polymer unit.