IOM 2021, Блиц — Задача 28

The Blitz-contest of IOM-2021

Условие

The solution containing 8.08 g of ferric nitrate nonahydrate was thoroughly mixed with the solution of 12.12 g of potassium oxalate dihydrate. The resulting solution was put into a fridge to cool it down. The mass of a green monocrystal precipitated from the cold solution was 7.856 g. Assume that the yield of an octahedral complex of Fe(III) is 80% and the monocrystal is uncontaminated. Determine the chemical formula of this monocrystal. Write down the indexes $x$, $y$, $z$ in the formula

$\mathrm{K}_x[\mathrm{Fe(C_2O_4)}_y] \cdot z\mathrm{H_2O}$.

$x$ = , $y$ = , $z$ = .

Отговори

Решение

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Оригинал в Архива: iom-2021-blitz-tasks-eng.pdf · официални решения: iom-2021-blitz-answers-eng.pdf