In the qualitative analysis of group 3 cations blood red colouration is a test for

Why is blood red in colour?

Why the blood is red in colour?

In the detection of group II cations in the qualitative analysis of salts. HCl is added before passing H_(2)S . This is meant

In the Lassaigne’s test, the blood red colouration is due to the formation of

In qualitative analysis. Explain why The cations of group II are precipitated , in acidic medium while those of group IV in alkaline medium.

In the presence of dilute HCl, H_(2)S results in the precipitation of group II cations but not group IV cations during qualitative analysis. It is due to :

H_(2)S gas when passed through solution of cations containing HCl precipitates the cations of second group of qualitative analysis but not those belonging to the fourth group. It is because