Chemistry, asked by vishalkakad627, 6 hours ago

The removal of H2S gas from filtrate is must before doing analysis of group III and V. Why ?

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Answered by SpraxGamer

Answer:

Explanation:Answer: In qualitative analysis of cations of second group, H2S is passed in presence of HCl. ... These sulphide ions are sufficient for the precipitation of second group cations in form of their sulphides due to lower value of their solubility product (Ksp).

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