多硫化钠Na2Sx()在结构上与Na2O2,FeS2等有相似之处,Na2Sx在碱性溶

多硫化钠Na2Sx)在结构上与Na2O2FeS2等有相似之处,Na2Sx在碱性溶液中可被NaClO氧化成Na2SO4,而NaClO被还原成NaCl,反应中Na2SxNaClO的量之比为116,则x值是(   

A5       B4       C3       D2

答案

A

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