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Tools & Inquiries G.1 Experimental Techniques (id: 63b0155fe)

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admin 发表于 2024-2-6 21:37:24 | 显示全部楼层 |阅读模式
本题目来源于试卷: Tools & Inquiries G.1 Experimental Techniques,类别为 IB化学

[填空题]
Potassium hydrogen pve-i6aptl5: 9+f ftz xbutw+04 vg 8bshthalate or KHP($C_8H_5O_4K$) is an acidic salt compound which is commonly used to standardize sodium hydroxide(NaOH) solutions. The reaction between KHP and NaOH is given below.

$KHC_8H_4O_4$ +NaOH → $KNaC_8H_4O_4$ + $H_2O$

1.Calculate the mass of KHP needed to prepare 25.00 cm$^{3}$ of 0.100mold m$^{-3}$ KHP solition
n=  g of KHP
2.Calculate the volume of 1.0mold $m^{-3}$ aqueous NaOH solution needed to prepare 50 $cm^{3}$ of 0.100mold m$^{-3}$ aqueous NaOH solution.
V=  $cm^3$

3.If 27.1cm$^{3}$ of the KHP solution prepared in (a) were needed to standardize 25.0cm$^{3}$ of the aqueous NaOH solution prepared in (b), calculate the exact concentration of the aqueous NaOH solution.




参考答案:
空格1: 0.510±3%空格2: 5.00±3%


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