Răspuns:
Explicație:
ms HCl =146g
c=10%
mNaOH
m produsi de reactie
-se afla md HCl
md=c.ms:100
md=10 .146 :100=14,6 g HCl
xg 14,6g yg zg
NaOH + HCl = NaCl +H2O
40g 36,5g 58,5g 18g
x=40.14,6 : 36,5=16 g NaOH
y=14,6 .58,5 :36,5=23,4 g NaCl
z=14,6 .18 : 36,5=7,2 g H2O
MHCl=1+35,5=36,5------>36,5g/moli
MNaOH=23+16+1=40------>40g/moli
MNaCl=23+35,5=58,5------->58,5g/moli
MH20=2+16=18-------> 18g/moli