计算题:欲配制c(1∕2EDTA)=0.10mol∕L乙二胺四乙酸二钠(EDTA二钠)溶液1000mL,需用EDTA二钠多少克?
正确答案:
1∕2EDTA二钠的摩尔质量为186.12g∕mol,设需EDTA二钠的质量为Wg,则:
W=
•V=
×1000=18.612g
配制c(1∕2EDTA)=0.10mol∕L乙二胺四乙酸二钠(EDTA二钠)溶液1000mL,需用EDTA二钠18.612克。
W=
![](https://img.274949.com/Images/2020-03/20/y6u5pe78.png)
![](https://img.274949.com/Images/2020-03/20/6s521cgr.png)
配制c(1∕2EDTA)=0.10mol∕L乙二胺四乙酸二钠(EDTA二钠)溶液1000mL,需用EDTA二钠18.612克。
答案解析:有
![](/editor/images/201705/qrcode_for_gh_573e2a458573_258.jpg)
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