CuO+H2SO4→CuSO4+H2O
nCuO=8/80=0,1mol
mH2SO4=122,5.20/100=24,5g
nH2SO4=24,5/98=0,25mol
→nH2SO4 dư=0,25-0,1=0,15mol
mdd sau=8+122,5=130,5g
mCuSO4=0,1.160=16g
mH2SO4 dư=0,15.98=14,7g
C% CuSO4=16/130,5.100%=12,26%
C%H2SO4 dư=14,7/130,5.100%=11,26%
b) 2NaOH+H2SO4→Na2SO4+2H2O
0,3 0,15
2NaOH+CuSO4→Na2SO4+Cu(OH)2
0,2 0,1 0,1
nNaOH=0,3+0,2=0,5mol
mNaOH=0,5.40=20g
mdd NaOH=20.100/10=200g
Vdd NaOH=200/1,02=196,078ml
