Răspuns:
-calculez moli de acid pur
p=niu,px100/niu,i----> niu,p= 0,8molHCl
-calculez moli NaOH din ecuatia chimica
1mol.........1mol
NaOH + HCl----> NaCl + H2O
x................0,8mol
x=0,8molNaOH, unde M,NaOH=40g/mol
m=niuxM=0,8molx40g/mol=........................CALCULEAZA !!!
Explicație: