Question

求化学方程式:1.硫酸转化成二氧化硫2.亚硫酸转化成亚硫酸钠3.亚硫酸转化成硫酸4.H2S+X2(Cl2,Br2,I2)

Answer 1

1.2H2SO4（浓）+ Cu =（加热）CuSO4 + SO2 + 2H2O

2.H2SO3 + 2NaOH = Na2SO3 + 2H2O

3.H2SO3 + H2O2 = H2SO4+ H2O

4.H2S+X2(Cl2,Br2,I2)= S + 2HX

5.H2S + H2O2 = S + 2H2O

6.H2S + Na2O2 = S + 2 NaOH