Setarakan reaksi berikut! FeCl2 + HCl + KMnO4 --> FeCl3 + MnCl2 + KCl + H2O

Penyetaraan Reaksi, Kelas 10

Misal koefisien reaksinya

aFeCl2 + bHCl + cKMnO4 --> dFeCl3 + eMnCl2 + f KCl + gH2O

Fe a = d
Cl 2a + b = 3d + 2e + f
H b = 2g
K c = f
Mn c = e
O 4c = g

misal c = 1
f = 1
e = 1
g = 4
b = 2(4) = 8

2a + b = 3d + 2e + f
krn a = d
2a + 8 = 3a + 2 + 1
8-2-1 = a
a = 5
d = 5

masukkan ke reaksinya
5FeCl2 + 8HCl + KMnO4 --> 5FeCl3 + MnCl2 + KCl + 4H2O