Răspuns:
Explicație:
148g xg yg zg
Ca (OH )2 +2 HCl= CaCl2 + 2H2O
74g 2 .36,5g 111 g 2.18g
x=148. 2 .36,5 : 74=146 g HCl
n=146g : 36,5g/moli=4 moli HCl
y=148 . 111 : 74=222 g CaCl2
n=222g : 111g/moli=2 moli CaCl2
z=148 .36 :74=72 g H2O
n= 72g : 18g/moli=4moli H2O
MCa(OH)2=40 +2.16 +2=74----->74g/moli
MHCl=1+35,5=36,5----->36,5 g/moli
MH2O=2+16=18----->18g/moli
MCaCl2=40+2.35,5=111---->111 g/moli