e.CM H2SO4=1.0,3/0,5=0,6M
CM HCl=0,4.0,2/0,5=0,16M
-> [H+]=2.CM H2SO4 +CM HCl =1,36M
[SO4 2-]=CM H2SO4=0,6M
[Cl-]=CM HCl=0,16M
f.nNaOH=0,5.0,4+0,2.200.1,25/(23+17)=1,45 mol
->[Na+]=[OH-]=1,45/0,6=2,416 M
g.
nFe2(SO4)3=0,004 mol
nK2SO4=0,04 mol
->[Fe 3+]=0,004.2/1,5=2/375 M
[K+]=0,04.2/1,5=4/75 M
[SO4 2-]=(0,004.3+0,04)/1,5=0,032M