容量瓶的选用实验中需用2.0mol/L的Na2CO3溶液950mL,配制时应选用的容量瓶的规格和称取Na2CO3的质量分别为A 1000mL,212g B 950mL,201.4gC 100mL,21.2g D 500mL,100.7g咋看咋不对啊!
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 00:17:21
![容量瓶的选用实验中需用2.0mol/L的Na2CO3溶液950mL,配制时应选用的容量瓶的规格和称取Na2CO3的质量分别为A 1000mL,212g B 950mL,201.4gC 100mL,21.2g D 500mL,100.7g咋看咋不对啊!](/uploads/image/z/6648389-53-9.jpg?t=%E5%AE%B9%E9%87%8F%E7%93%B6%E7%9A%84%E9%80%89%E7%94%A8%E5%AE%9E%E9%AA%8C%E4%B8%AD%E9%9C%80%E7%94%A82.0mol%2FL%E7%9A%84Na2CO3%E6%BA%B6%E6%B6%B2950mL%2C%E9%85%8D%E5%88%B6%E6%97%B6%E5%BA%94%E9%80%89%E7%94%A8%E7%9A%84%E5%AE%B9%E9%87%8F%E7%93%B6%E7%9A%84%E8%A7%84%E6%A0%BC%E5%92%8C%E7%A7%B0%E5%8F%96Na2CO3%E7%9A%84%E8%B4%A8%E9%87%8F%E5%88%86%E5%88%AB%E4%B8%BAA+1000mL%2C212g+B+950mL%2C201.4gC+100mL%2C21.2g+D+500mL%2C100.7g%E5%92%8B%E7%9C%8B%E5%92%8B%E4%B8%8D%E5%AF%B9%E5%95%8A%21)
容量瓶的选用实验中需用2.0mol/L的Na2CO3溶液950mL,配制时应选用的容量瓶的规格和称取Na2CO3的质量分别为A 1000mL,212g B 950mL,201.4gC 100mL,21.2g D 500mL,100.7g咋看咋不对啊!
容量瓶的选用
实验中需用2.0mol/L的Na2CO3溶液950mL,配制时应选用的容量瓶的规格和称取Na2CO3的质量分别为
A 1000mL,212g B 950mL,201.4g
C 100mL,21.2g D 500mL,100.7g
咋看咋不对啊!
容量瓶的选用实验中需用2.0mol/L的Na2CO3溶液950mL,配制时应选用的容量瓶的规格和称取Na2CO3的质量分别为A 1000mL,212g B 950mL,201.4gC 100mL,21.2g D 500mL,100.7g咋看咋不对啊!
容量瓶的规格没有950mL的,如果分开几个小瓶那误差会很大,所以单看容量瓶规格就是选A
必须选A,容量瓶是有规格的,如50mL,100mL,250mL,1000mL等。需要950mL,要么配的刚好,要么多于950,但容量瓶没有950mL规格的,所以就选1000mL的。