Inorganic and physical chemistry - part 2 Flashcards
at equilibrium what is equal?
the rates of forward and reverse reaction
what can the position of equilibrium be changed by?
- concentration
- temperature
- pressure
what is the equilibrium constant represented by?
K
if K=1, what does it show?
that the reaction is at equilibrium
if K is large, what does it show?
that the products are favoured
if K is small, what does it show?
that the reactants are favoured
what effect does concentration have on the value of K?
no effect, value of K remains the same
what is Le Chatelier’s principle?
when a reaction at equilibrium is subjected to change, the composition alters in such a way as to minimise the effects of the change
does pressure have an effect on the value of K?
no
if the temperature is decreased what happens to the value of K?
value of K decreases
if the temperature is increased what happens to the value of K?
value of K increases
what is the Bronsted-Lowry definition of an acid?
proton donor
what is the Bronsted-Lowry definition of a base?
proton acceptor
if an acid/base is described as being strong, what does this mean?
it is fully dissociated into ions
what are some examples of a strong acid?
- hydrochloric acid
- nitric acid
- sulphuric acid