Răspuns:
Explicație:
ms HCl= 36,5 g
c= 5%
VH2=?
-se afla md sol. de HCl
md= c. ms : 100
md= 5 . 36,5 : 100= 1,825 g HCl
1,825g xg
2HCl + Zn = Zn Cl2 + H2
2 .36,5g 2g
x=1,8215 . 2 : 73 = 0,05 g H
n= m : M
n= 0,05g : 2g/moli= 0.025 moli H2
VH2= 0,025moli . 22,4L/moli = 0,56 L
MHCl= 1 + 35,5= 36,5----> 36,5g/moli
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Verified answer
Răspuns:
Explicație:
ms HCl= 36,5 g
c= 5%
VH2=?
-se afla md sol. de HCl
md= c. ms : 100
md= 5 . 36,5 : 100= 1,825 g HCl
1,825g xg
2HCl + Zn = Zn Cl2 + H2
2 .36,5g 2g
x=1,8215 . 2 : 73 = 0,05 g H
n= m : M
n= 0,05g : 2g/moli= 0.025 moli H2
VH2= 0,025moli . 22,4L/moli = 0,56 L
MHCl= 1 + 35,5= 36,5----> 36,5g/moli