nNaOH=8/40=0,2(mol)
=>CMNaOH=0,2/0,5=0,4(M)
nCa(OH)2 0,5M=0,3.0,5=0,15(mol)
nCa(OH)2 2,5M=0,2.2,5=0,5(mol)
=>CMCa(OH)2=0,15+0,5/0,3+0,2=1,3(M)
nCu=6,4/64=0,1(mol)
pt: CuO+H2--t*-->Cu+H2O
Theo pt: nCuO=nCu=0,1(mol)
=>mCuO=0,1.80=8(g)
Theopt: nH2=nCu=0,1(mol)
=>VH2=0,1.22,4=2,24(l)
m...