Объяснение:
S + H2 = H2S
H2S + 2KOH = K2S + 2H2O
K2S + CuCl2 = 2KCl + CuS↓
S+H2=H2S
H2S+2K=K2S+H2
K2S+Cu=CuS+2K
Объяснение:
S + H2 = H2S
H2S + 2KOH = K2S + 2H2O
K2S + CuCl2 = 2KCl + CuS↓
S+H2=H2S
H2S+2K=K2S+H2
K2S+Cu=CuS+2K