Equilibrium Law And Chemical Equilibrium Flashcards
What is a reverse reaction?
Starts with 100% P, decreases in G until point E
What is a dynamic equilibrium?
Reactions do not stop when equilibrium is reached. The forward and backward reactions continue to occur at the same rate
What does the equilibrium constant (K) describe?
The composition of a reaction mixture when it comes to equilibrium
What is thermodynamic activity?
Effective measured concentration or pressure of a component at a given moment
When is K used?
Heterogenous reaction (more than 1 phase)
What is the reaction quotient Q?
Measure of the composition of the reaction mixture as the reaction progresses NOT AT EQUILIBRIUM
If 🔺Gr<0, Q<K what happens?
The forwards reaction proceeds
If 🔺Gr>0, Q>K what happens?
The reverse reaction proceeds
If 🔺Gr=0, Q=K what happens?
The system is at equiu
When is equilibrium reached?
When Gibbs energy is at its minimum
If K>1 what is mainly present?
Products
Therefore negative 🔺G
If K<1 what is mainly present?
Mainly reactors
Therefore positive 🔺G
If K=1 what is mainly present?
Equal amounts of products and reactors
Therefore 🔺G is zero
What does it mean if 🔺Gr is more negative than -22.8kj/mol?
Completion
What does it mean if 🔺Gr is more positive than +22.8kj/mol?
Reaction does not occur
