36. Решение задачки по химии №1251789

11. A sample weighing 0.5150 g was dissolved in 50.0 ml of distilled water. In the resulting solution, the electrode potential of the calcium-selective electrode relative to the silver-silver chloride reference electrode is 12.0 mV. In standard solutions containing known calcium ion contents, the potentials of the indicator electrode are measured. measured under identical conditions were:
c(Ca2), mol/l 1.0*10-1 1.0*10-2 1.0*10-3 1.0*10-4 1.010-5
E, mV 726.0 46.0 18.0 -8.0 -34.0
Calculate the mass fraction of calcium in the sample.

If the file does not open for you, install the Rar archiver program. Inside the archive, the solution is in WORD format.