equlibrium
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what is a dynamic equibrium
a state that occurs in reversible reactions when certain conditions are met. it occurs in closed systems where no substance can enter or leave. when the rate of forward reaction equals the rate of the reverse reactions. both reactions happen at the same time and same speed so theres no net change
what is le chateliers principle
if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract this change
what is thermodymanics
the energy changes during chemical reactions and predictions as to whether a reaction is spontaneous based on energy considerations
what is enthalpy change
Heat energy absorbed or released at constant pressure.
what is Entropy Change
Measure of disorder or randomness in the system.
what does Gibbs Free Energy determine
spontaneity
what is thermodymanic stability
Products lower in Gibbs free energy than reactants are more stable and favored at equilibrium.
what does kenetics focus on
how fast a reaction happens and why
which factors affect rate of reaction in kinetic reactions
• temp • catalysts • concentrations and surface area
what do energy profiles show
relative energy of reactants/products and activation energy.
what happens when temp changes in a dynamic equilibrium
adding heat to the system mean the system tries to absorb this heat by favoring the endothermic reaction
what happens when temp decreases in a dynamic equilibrium
heat is removed, system tries to produce more heat by favoring the exothermic reaction
whats the law of conservation of mass
No atoms are created or destroyed during a chemical reaction. The total mass of the products is equal to the total mass of the reactants.