99. Решение задачки по химии №009 901

5. A portion of technical sodium nitrite weighing 0.5025 g was dissolved in water. The volume of the solution was adjusted to 250 ml. for titration of 25 ml of a solution of potassium permanganate with T=0.2501 g/ml, 21 ml of the resulting solution were used. Calculate the mass fraction of NaNO2 in the sample

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.