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[单选题]
Na2S2O3+H2SO4
Na2S2O3+H2SO4
Na2SO4+S↓+SO2↑+H2O在室温下反应,以下4组溶液最先出现浑浊的是()
A.0.1mol/LNa2S2O3和0.1mol/LH2SO4等体积混合
B.0.5 mol/LNa2S2O3和0.5mol/LH2SO4等体积混合
C.1mol/LNa2S2O3和1mol/LH2SO4等体积混合
D.0.5mol/LNa2S2O3和1mol/LH2SO4等体积混合
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