已知气体的摩尔质量越小,扩散速度越快。右下图所示为气体扩散速

已知气体的摩尔质量越小,扩散速度越快。右下图所示为气体扩散速度的实验,两种气体扩散相遇时形成白色烟环。下列关于甲、乙的判断正确的是(   

A.甲是浓氨水,乙是浓硫酸           B.甲是浓盐酸,乙是浓氨水

C.甲是浓氨水,乙是浓盐酸           D.甲是浓硝酸,乙是浓氨水

答案

C

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