实验中需用2.0 mol·L-1的(分子量106)Na2CO3溶液950 mL,配制时应选用

实验中需用2.0 mol·L1的(分子量106Na2CO3溶液950 mL,配制时应选用容量瓶的规格和称取Na2CO3固体的质量分别为

(  )

A950 mL201.4 g                B1 000 mL212.0 g

C100 mL21.2 g                 D500 mL100.7 g

答案

C

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