下列A~D 4组,每组有两个反应,其中两个反应可用同一个离子方程

下列A~D 4组,每组有两个反应,其中两个反应可用同一个离子方程式表示的一组是                                                    (     )

 

A

少量SO2通入Ba(OH)2溶液中

过量SO2通入少量Ba(OH)2溶液中

B

少量浓氨水滴入Al2(SO4)3溶液中

少量Al2(SO4)3溶液滴入浓氨水中

C

0.1 mol Cl2通入含0.2 mol FeBr2的溶液中

0.3 mol Cl2通入含0.2 mol FeBr2的溶液中

D

过量稀硝酸与少量铁屑混合

少量稀硝酸与过量铁屑混合

 

 

答案

B

解析:略

 

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