[填空题]
Potassium hydrogen phthals.1s e 9lffku6s+0hzyate or KHP( tod/ k f2 c60:a5wnzdyrothp0o5.sb0$C_8H_5O_4K$) 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.
