A chemical reaction is in equilibrium. Addition of a...

A chemical reaction is in equilibrium. Addition of a catalyst would not result in
(1) the rates of forward and backward reactions are equally altered
(2) a new reaction pathway to reaction
(3) attainment of equilibrium quickly
(4) increase in the amount of heat evolved in the reaction

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Key Concepts

Chemical Equilibrium

Chemical equilibrium refers to the state reached in a reversible reaction where the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products over time. This concept is central to understanding that equilibrium is a dynamic balance, not a static condition.

Role of a Catalyst

A catalyst functions by lowering the activation energy of both the forward and reverse reactions, thereby increasing their rates without altering the overall equilibrium composition or the inherent thermodynamic properties of the reaction. It does not affect the net energy change or the equilibrium state.

Activation Energy

Activation energy is the minimum energy required to initiate a chemical reaction. By providing an alternative reaction pathway with lower activation energy, catalysts speed up reactions without changing the final equilibrium positions or the overall enthalpy of the reaction.

Reaction Thermodynamics

Reaction thermodynamics deals with the energy changes during chemical reactions, including the heat evolved or absorbed. The amount of heat (enthalpy change) is an intrinsic property of the reactants and products and remains unaffected by the presence of a catalyst, which only influences the reaction rate.

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