對于反應(yīng):2H2S+SO2=3S+2H2O

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    問題補(bǔ)充:單選題對于反應(yīng):2H2S+SO2=3S+2H2O,被氧化的硫原子與被還原的硫原子的質(zhì)量之比為?
    A.1:1
    B.2:1
    C.3:1
    D.1:2
    答案:B