Răspuns :
Răspuns:
Explicație:
160g NaOH
react. cu HCl
ms HCl, c- 36,5 %
160g xg
NaOH + HCl= NaCl + H2 O
40g 36,5g
x= 160 . 36,5 : 40 = 146 g HCl -------> md
ms= md.100 : c
ms= 146 .100 : 36,5=400g sol. HCl
MnAOH= 23 + 16 + 1= 40------> 40g/moli
Răspuns:
Explicație:
160g NaOH
react. cu HCl
ms HCl, c- 36,5 %
160g xg
NaOH + HCl= NaCl + H2 O
40g 36,5g
x= 160 . 36,5 : 40 = 146 g HCl -------> md
ms= md.100 : c
ms= 146 .100 : 36,5=400g sol. HCl
MnAOH= 23 + 16 + 1= 40------> 40g/moli