[Server]

Hello everybody! I'm Server and I from Poland. I'm studying chemistry.

I have question to anions:

I did course of analysis solution to detect anions added to the starting solution of 2M HCl and the mixture was warmed.

Please write me anion detection reactions: SO3 2-, CO3 2-, NO2-, SO3 2-, S203 2-, S2-, CH3COO-
Nowhere can I find the reaction, is it even possible to write?

For example: CO3 2- + H3O+ -> CO2 + H2O - good?

[Hunter2]

Equation is not balanced, means not good.

At least Hydrochloric will built the acid of the weaker anions, most of them have decomposition.

R^- + H₃O⁺ => HR + H₂O

HR => A +B+ etc.

[Borek]

Do you know anything about acid dissociation equilibria? These are all weak acids, so they easily get protonated. Some can also decompose.

[Server]

I found I-, please write me reactions:

A small sample of the starting solution of 2M H2SO4 added to acidify the solution, then dropwise KMnO4. Write me the reactions, please.

Detection of anions

[Borek]

Please read the forum rules. You have to show your attempts at solving the question to receive help. This is a forum policy.

Hint: you have a strong oxidizer (KMnO₄) and a mildly reducing agent (I^-).