Răspuns:
c,m= niu/V-----> niu= 0,1mol/lx0,2 l= 0,02molH2C2O4
DAR 1molH2C2O4.....1mol H2C2O4.2H2O
0,02.........................X=niu= 0,02mol
M,H2C2O4.2H2O=126g/mol
m,niuxM= 0,02molx126g/mol=........calcueaza !!!!
v,acid xc,acid = v,bazaxc,baza
9,1x0,1105= 10xc,baza-----> c,baza =0,1mol/l
Explicație: