下列叙述错误的是(   ) A.10ml质量分数为98%的H2SO4,用10ml水稀释

下列叙述错误的是(  

A10ml质量分数为98%H2SO4,用10ml水稀释后,H2SO4的质量分数大于49%

B.配制0.1mol/LNa2CO3溶液480ml,需用500ml容量瓶

C.在标准状况下,将22.4L氨气溶于1L水中,得到1mol/L的氨水

D.向两份完全一样的稀烧碱溶液中分别加入一定量的Na2O2Na2O,使溶液均恰好饱和,则加入的Na2O2Na2O的物质的量是相等的(保持温度不变)。

答案

C

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