1.黃色沉淀 Na2S2O3+H2SO4=2NaSO4+S↓+SO2↑+H2O2.Al2S3+6H2O=2Al(OH3)↓+3H2S↑
硫代硫酸鈉標準溶液的配制和標定:(依據國標GB/T5009.1-2003)C(Na2S2O3)=0.1mol/L1.配制:稱取26g硫代硫酸鈉(Na2S2O35H2O)或16g無水硫代硫酸鈉,及0.2......