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derisepicowe0fa
10.11.2019 •
Chemistry
Ask your teacher sodium hydroxide solution is usually standardized by titrating a pure sample of potassium hydrogen phthalate (khc8h4o4, often abbreviated khp), an acid with one acidic hydrogen and a molar mass of 204.220 g/mol. it takes 36.01 ml of a sodium hydroxide solution to titrate a 0.1182-g sample of khp. what is the molarity of the sodium hydroxide
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Ответ:
0.0161 M
Explanation:
Moles of KHP :
Given, Mass of KHP = 0.1182 g
Molar mass of KHP = 204.22 g/mol
The formula for the calculation of moles is shown below:
Thus,
According to the reaction shown below:
KHP + NaOH ⇒ KNaP + H₂O
1 mole of KHP reacts with 1 mole of NaOH
So,
Moles of NaOH =![5.7879\times 10^{-4}\ mol](/tpl/images/0367/7499/4e416.png)
Volume = 36.01 mL = 0.03601 L ( 1 mL = 0.001 L)
Ответ: