Chapter 14 Flashcards
chemical equilibrium
the dynamic process where the concentrations of reactants and products remain constant over time and the rate of reaction in the forward direction equals that of the reverse direction
Why is chemical equilibrium a dynamic process
reactants form products and products form reactants at equal rates
This is the dynamic process where the concentrations of reactants and products remain constant over time and the rate of reaction in the forward direction equals that of the reverse direction
chemical equilibrium
equilibrium constant (K)
the value of the ratio of concentration terms in the equilibrium constant expression at a specific temperature
This is the value of the ratio of concentration terms in the equilibrium constant expression at a specific temperature
equilibrium constant (K)
equilibrium constant expression
the ratio of the equilibrium concentrations of products to reactants, each term raised to a power equal to the coefficient of that substance in the balanced chemical equation for the reaction
This is the ratio of the equilibrium concentrations of products to reactants, each term raised to a power equal to the coefficient of that substance in the balanced chemical equation for the reaction
equilibrium constant expression
What do very large values of K tell us about the reaction in terms of equilibrium?
The reaction likely has gone past equilibrium to completion
What do very small values of K tell us about the reaction in terms of equilibrium?
There is very little product present at equilibrium.
A + B –> C; k = 100
What is k for c –> A + B
1/100
A + B –> C; k = 100
What is the value of k if we multiply this equation by 2?
10,000
What is the reaction quotient?
Numerical value of the mass action expression
If Q < K, which way will the reaction procede?
right
If Q = K, which way will the reaction proceed?
It will not proceed either way; it is at equilibrium
If Q > K, which way will the reaction proceed?
Leftwards!
