Mengjitung biloks

- MnO2
Mn + 2O = 0
Mn + 2(-2) = 0
Mn - 4 = 0
Mn = 4
- HCl
H + Cl = 0
1 + Cl = 0
Cl = -1
- MnCl2
Mn + 2Cl = 0
Mn + 2(-1) =0
Mn - 2 = 0
Mn = 2
- Na2Cr2O7
2Na + 2Cr + 7O = 0
2(1) + 2Cr + 7(-2) = 0
2 + 2Cr - 14 = 0
2Cr = 14 - 2
2Cr = 12
Cr = 6
- (SO4)2-
SO4 = -2
S + 4O = -2
S + 4(-2) = -2
S - 8 = -2
S = 8 - 2
S = 6
- ZnCl2
Zn + 2Cl = 0
Zn + 2 (-1) = 0
Zn - 2 = 0
Zn = 2
- Ca3(PO4)2
3Ca + 2P + 8O = 0
3(2) + 2P + 8(-2) = 0
6 + 2P - 16 = 0
2P = 16 - 6
2P = 10
P = 5
- NaClO3
Na + Cl + 3O = 0
Na - 1 + 3(-2) = 0
Na - 1 - 6 = 0
Na = 1 + 6
Na = 7
- KMnO2
K + Mn + 2O = 0
1 + Mn + 2(-2) = 0
1 + Mn - 4 = 0
Mn = 4 -1
Mn = 3
- Al2(SO4)3
2 Al + 3S + 12O = 0
2(3) + 3S + 12(-2) = 0
6 + 3S - 24 = 0
3S = 24 - 6
3S = 18
S = 6
- NH4+
N + 4H = 1
N + 4(1) = 1
N + 4 = 1
N = -3
- Cr2O7-2
2Cr + 7O = -2
2Cr + 7(-2) = -2
2Cr - 14 = -2
2Cr = 14 - 2
2Cr = 12
Cr = 6
- ClO4-
Cl + 4O = -1
Cl + 4(-2) = -1
Cl -8 = -1
Cl = 8 - 1
Cl = 7
- C2O4-2
2C + 4O = -2
2C + 4(-2) = -2
2C - 8 = -2
2C = 8 - 2
2C = 6
C = 3