m(р-ра) = 365 g
W(HCl) = 20%
V(H2) - ?
m(соли) - ?
m(Fe) - ?
m(HCl) = 0.2 * 365 = 73 g
n(HCl) = 73 / 36.5 = 2 mol
2 mol x mol
Fe + 2HCl = FeCl2 + H2
2 mol 1 mol
2:2 = 1:x
2x = 2
x = 1
m(FeCl2) = 1 * 127 = 127 g
V(H2) = 22.4 * 1 = 22.4 l
x mol 2 mol
1 mol 2 mol
1:x = 2:2
m(Fe) = 1 * 56 = 56 g
ответ: V(H2) = 22.4 l , m(FeCl2) = 127 g , m(Fe) = 56 g.
m(р-ра) = 365 g
W(HCl) = 20%
V(H2) - ?
m(соли) - ?
m(Fe) - ?
m(HCl) = 0.2 * 365 = 73 g
n(HCl) = 73 / 36.5 = 2 mol
2 mol x mol
Fe + 2HCl = FeCl2 + H2
2 mol 1 mol
2:2 = 1:x
2x = 2
x = 1
m(FeCl2) = 1 * 127 = 127 g
2 mol x mol
Fe + 2HCl = FeCl2 + H2
2 mol 1 mol
2:2 = 1:x
2x = 2
x = 1
V(H2) = 22.4 * 1 = 22.4 l
x mol 2 mol
Fe + 2HCl = FeCl2 + H2
1 mol 2 mol
1:x = 2:2
2x = 2
x = 1
m(Fe) = 1 * 56 = 56 g
ответ: V(H2) = 22.4 l , m(FeCl2) = 127 g , m(Fe) = 56 g.