Electro-chemistry

The partial pressure is the pressure which the gas would have if it filled the same volume by itself. The total pressure of a gas…

Temperature has a significant effect on most reactions. The position of the equilibrium will shift with a change of temperature. Reaction rates generally increase with…

Le Chatelier’s Principle can also be used to predict how changing the pressure can also alter the position of equilibrium. The pressure of a gas…

An equilibrium position will always shift if the amount of any substance in the equilibrium mixture is changed. If more reactant is added, or if…

How could we predict the direction in which a reaction at non-equilibrium conditions will shift to re-establish equilibrium? The reaction quotient, Qc, is an expression…

If we express a gas-phase equilibria in terms of partial pressures, we obtain the equilibrium constant Kp. For the reaction below: CO (g) + 3H2…

We can combine equilibrium reactions whose Kc values are known to obtain Kc for the overall reaction Combining rules If a reaction is reversed, invert…

If the equilibrium constant for a reaction is given, it is possible to calculate the concentrations of substances in the equilibrium concentrations or mixture. Consider…

Equilibrium concentrations for a reaction cannot be predicted theoretically. They must be obtained experimentally and then substituted into the equilibrium constant expression in order to…

In heterogeneous systems where two or more phases are present at equilibrium (e.g. solid and gas), the equilibrium is unaffected by the amounts of pure…