Tentukan persamaan 1. Zn+HCl》ZnCl2+HCl 2.HNO3+H2S》NO+H2O+S

1) a Zn + b HCl => c ZnCl2 + d H2
Zn => a = c
Cl => b = 2c
H => b = 2d
Misal : a = 1 ; maka b = 2 ; c = 1
Zn + 2 HCl => ZnCl2 + H2

2) a HNO3 + b H2S => c NO + d H2O + e S
N => a = c
S => b = e
O => 3a = c + d
H => a + 2b = 2d
Misal : a = 2 ; maka b = 3 ; c = 2 ; d = 4 ; e = 3
2 HNO3 + 3 H2S => 2 NO + 4 H2O + 3 S