Calculation of simple equilibria

Use of the quantity allows rapid conversion of equations which describe the chemical equilibrium of simple systems, into forms which are relatively easy to solve. 

When only one chemical reaction takes place in a system, substitution of individual numbers of moles in equation (3.38) by the expressions 

Determine the equilibrium composition of a system in which the reaction 

The mass balance of the individual constituents in equihbrium is determined by the following relations (when n — n = 1 in order that e (0, l)) 

Substituting the balance relations into equation (4.10) and calculating the equilibrium constant from the given thermochemical data we obtain the algebraic equation 

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