Question 1b
HSO4- (aq) + H3O+ (aq) H2SO4 (aq) + H2O (l)
[1]
Question 1c
CO32- (aq) + H+ (aq) HCO3- (aq)
[1]
HSO4- (aq) + H3O+ (aq) H2SO4 (aq) + H2O (l)
[1]
CO32- (aq) + H+ (aq) HCO3- (aq)
[1]
Brønsted–Lowry base: ....................
Brønsted–Lowry acid: ....................
[2]
HCO3– (aq) + H2O (l) ⇌ H2CO3 (aq) + OH– (aq)
HCO3– (aq) + H2O (l) CO32– (aq) + H3O+ (aq)
Identify two different amphiprotic species in the above reactions.
[1]
d)
i) State what is meant by the term conjugate base.
[1]
ii) State the conjugate base of the hydroxide ion, OH–
[1]
i) State the type of reaction that takes place.
[1]
ii) State the formula of the products of the reaction.
[1]
iii) State the sign of the enthalpy change for this reaction.
[1]
d) Write the formulae for the following:
i) Carbonic acid. [1]
ii) Ammonium sulfate. [1]
iii) Magnesium ethanoate. [1]