Question

帮写几个化学方程式，急需！！！

NaClO转化成Cl2
NaCl+H2SO4(浓)=
HCl+AgNO3
FeCl3+Cu
FeS转化成H2S

Answer 1

2NaClO+2HCl=2NaCl+Cl2+H20 Cl2气体
NaCl+H2SO4(浓)=HCl+NaHSO4微热 HCl气体
2NaCl+H2SO4(浓)=2HCl+Na2SO4加热
HCl+AgNO3=AgCl+HNO3 AgCl沉淀
2FeCl3+Cu=2FeCl2+CuCl2
FeS+H2SO4(稀)=FeSO4+H2S H2S气体

Answer 2

Naclo+Br2+Hcl=NaBrO+Cl2+HBr
NaCl+H2SO4(浓）=HCl+NaHSO4
HCl+AgNO3=AgCl（沉淀符号）+HNO3
2FeCl3+Cu=2Fecl2+Cucl2
FeS+2HCL=Fecl2+H2S

Answer 3

NaClO+2HCl=NaCl+Cl2+H2O
2NaCl+2H2SO4(浓)=Na2SO4+Cl2+SO2+2H2O
HCl+AgNO3=AgCl+HNO3
2FeCl3+Cu=2FeCl2+CuCl2
FeS+H2SO4=FeSO4+H2S

Answer 4

NaClO+2HCl=NaCl+H2O+Cl2↑
2NaCl+H2SO4(浓)=△Na2SO4+2HCl↑
HCl+AgNO3=AgNO3↓+HNO3
2FeCl3+Cu=2FeCl2+CuCl2
FeS+2HCl=FeCl2+H2S↑