Răspuns:
Explicație:
112g KOH
react. cu HCl
cantit. de prod. de react.
112g xg yg
HCl + KOH = KCl + H2O
56g 74,5 g 18g
x=112 . 74,5 : 56= 149 g KCl
n= 149g : 74,5 g/moli= 2 moli KCl
y=112 . 18 : 56=36 g H2O
n= 36g : 18 g/moli = 2 moli H2O
MKCl= 39 + 35,5= 74,5-------> 74,5g/moli