Question

calculati concentratia molara a unei solutii de NaOH daca la neutralizarea a 10 ml din aceasta solutie s.au consumat 20 ml HCL 0,1 M. Notati ecuatia reactiei care are loc,

Answer 1

Cm=n/Vs => n=Cm*Vs
nacid=0,1*0,02=0,002moli
1mol.....1mol
NaOH + HCl -> NaCl + H2O
0,002.....0,002
Cm=n/Vs=0,002moli/0,01l=0,2M