Equilibrium Flashcards
In a reaction of more that one step, how is the equilibrium constant found for the overall reaction ?
Multiply together the equilibrium constants for each step
At equilibrium , what is equal?
Forward and reverse reaction rates, molar concentrations of products and reactants or kf and kr?
Forward and reverse reaction rates
The measure of the degree to which a reaction has gone to completion (Qc)?
The reaction quotient
If there is few reactants compared to products , the Keq value ??
Much larger than 1
If there is little of products compared to reactants the Keq value ?
Is much smaller than 1
The rule that if an external stress is applied to a system currently in equilibrium, the system will attempt to adjust itself to partially offset the stress.
Le chateliers principle
Increasing the pressure of a system will shift the equilibrium to cause a __ of number of moles of gas present. This causes the volume to _____.
Decrease
Decrease
When the pressure of the system js increased , the equilibrium will shift so that the side of the reaction producing _____ moles is favoured
Fewer
Of the volume of the system is increased this causes the equilibrium to shift to the side with the ___ moles
More
Heat is considered a product of _____ and a reactant if _____
Exothermic
Endothermic
Out of a change in the concentration of a species , pressure , volume, or temperature which one causes a change in the equilibrium constant AND the position of the equilibrium
Temperature
The quantity of a salt that can be dissolved is considerably reduced when it is dissolved in a solution that already contains of of its ions rather than in a pure solvent. This will not change ksp but it will change the molar solubility
The common ion effect
Do catalysts affect the equilibrium constant ?
No
