Question

Give reasons potassium ferrro cyanide
is
used for testing
the
copper salt,​

Answer 1

Answer:

Potassium ferrocyanide trihydrate is a salt of the Fe(CN)64- ferrocyanide ion. Ferrocyanide is a reducing iron species, being oxidized from ferrous Fe(II) to ferric Fe(III).Potassium ferrocyanide is used to determine the concentration of potassium permanganate

Explanation:

The potassium and sodium ferrocyanides are also used in the purification of tin and the separation of copper from molybdenum ores. Potassium ferrocyanide is used in the production of wine and citric acid. In the EU, ferrocyanides (E 535–538) were, as of 2018, solely authorised in two food categories as salt substitutes.