设N A 代表加德罗常数,下列关于0.2mol/L的Ba(NO 3 ) 2 溶液的说法中不正确的是 [ ]
A.
1L溶液中含有0.2N A 个NO 3 -
B.
1L溶液中所含的阴、阳离子总数为0.6N A 个
C.
0.5L溶液中Ba 2+ 浓度是0.1mol/L
D.
500mL溶液中,含有NO 3 - 的物质的量为0.2mol
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