SnO2->SnCl2->Sn(OH)2->Sn(NO3)2->SnS помогите плиз

Question

SnO2->SnCl2->Sn(OH)2->Sn(NO3)2->SnS помогите плиз

Answer 1

1) 2SnO2+4HCl = 2SnCl2+2H2O
2) SnCl2+Ca(OH)2 = Sn(OH)2+CaCl2
3) Sn(OH)2 + 2HNO3 = Sn(NO3)2+ 2H2O
4)Sn(NO3)2+ Li2S = SnS+ 2LiNO3