Understanding Equilibrium Constants in Chemical Reactions

What does the equilibrium-constant expression depend on?

The equilibrium-constant expression depends on the ________ of the reaction.

Answer:

Temperature and mechanism

When it comes to understanding equilibrium constants in chemical reactions, it is essential to consider the factors that affect the equilibrium-constant expression. According to the Arrhenius equation, the equilibrium constant (k) depends primarily on temperature and mechanism.

The Arrhenius equation is expressed as:

k = Ae^(-Ea/RT)

Where:

k = equilibrium constant

A = pre-exponential factor

Ea = activation energy

T = temperature

R = Universal gas constant

From the equation, we can see that the equilibrium constant is influenced by temperature and activation energy. Activation energy varies for different reaction mechanisms, indicating that the equilibrium constant is dependent on both temperature and mechanism.