Why is sulphuric acid not used during the reaction of alcohols with KI?
In the presence of sulphuric acid (H2SO4), KI produces HI
2KI + H2SO4 → 2KHSO4 + 2HI
Since H2SO4 is an oxidizing agent, it oxidizes HI (produced in the reaction to I2).
2HI + H2SO4 → I2 + SO2 + H2O
As a result, the reaction between alcohol and HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is not used during the reaction of alcohols with KI. Instead, a non-oxidizing acid such as H3PO4 is used.
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10 Comment(s) on this Question
I think this elaboration was more than enough
Thanks a lot
Thanks sir
Thank you :)
thnx
Why are other halogen acids like HBr not oxidised to the halogens? Why does this happen only with chlorine?
Tqð
Thanks
Thnks
Tq
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