9 - Equilibrium

Equilibrium constants are when K = ?

Products over reactants

What do you not include in equilibrium constant expressions?

No solids or liquids

What does Q (reaction quotient) mean

Where the reaction is at the current time

What does K (equilibrium constant) mean

Where the reaction wants to be at equilibrium

What does it mean if Q<K

The reaction will shift right

What does it mean if Q>K

The reaction will shift left

What does it mean if K>>1×10³

It means that the products are favored at equilibrium (more products at eq)

What does it mean if K<<1×10³

It means that the reactants are favored at equilibrium (more reactants at eq)

If delta H is negative, what side of the reaction does it show up on?

The product side

If the reaction is exothermic which way will it shift the reaction if temperature is increased?

It will shift to the left

Exothermic means heat is a product and delta H is negative

If the reaction is endothermic which way will it shift the reaction if temperature is increased?

to the right

Endothermic means heat is a reactant and delta H is positive

If pressure is increased (or volume is decreased) which way will the reaction shift?

It will shift to the side with less moles of gas

What is the reaction relating ΔG° and Keq

If ΔG°<0 what is Keq

Keq>1

if ΔG°>0 what is Keq

Keq<1

When a reaction is spontaneous the _____ are favored at equilibrium

Products

When a reaction is nonspontaneous the _______ are favored at equilibrium

Reactants