111. Задачка по химии №010 957

Calculate the sample to prepare 500 ml of titrated sodium hydroxide solution (0.1 mol/l). What weight of potassium hydrophthalate should be taken for installation K in order to use 20.00 ml of titrant for titration? Mm. sodium hydroxide 40.00. Mm. potassium hydrophthalate 204.23.

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