H2SO4:
md = ms×C/100= 400×5/100= 20g H2SO4 dizolvat
MH2SO4 = 98g/mol
MKOH = 56g/mol
M K2SO4 = 174g/mol
98g...........2×56g..........174g
H2SO4 + 2KOH = K2SO4 + 2H2O
20g.............x.............y
x= 20×2×56/98=22.84g KOH = md
y=20×174/98=35.51 g K2SO4
KOH:
ms = 22.84×100/2 = 1142g soluție KOH