对于反应2 SO2( g )+O2( g )  2SO3( g),能增大正反应速率的措施是(   )

对于反应2 SO2( g )O2( g )  2SO3( g),能增大正反应速率的措施是(     )

A.通入大量O2   B.增大容器容积    C.移去部分SO3    D.降低体系温度

答案

A

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