Using the Brønsted-Lowry concept of acids and bases, identify the Brønsted-Lowry acid and base in each of the

a) Using the Brønsted-Lowry concept of acids and bases, identify the Brønsted-Lowry acid and base in each of the following reactions:
HS−(aq)+H2O(l)→H2S(aq)+OH−(aq)
(CH3)2NH(g)+BF3(g)→(CH3)2NHBF3(s)

b)Using the Arrhenius concept of acids and bases, identify the Arrhenius acid and base in each of the following reactions:
LiOH(aq)+HNO3(aq)→LiNO3(aq)+H2O(l)
CH3NH2(g)+HBr(g)→CH3NH3Br(s)

a) HS- = base
H2S = conjugate acid
H2O = acid
OH- = conjugate base

BF3 = acid but its a lewis acid
(CH3)2NH = base but a lewis base

b) LiOH = arrhenius base
HNO3 = arrhenius acid

CH3NH2 = bronsted base
HBr = bronsted acid