1.

Usingdil HCI, which of the following radical cannot be confirmed

Answer»

`S^(2-)`
`S_(2)O_(3)^(2-)`
`CO_(3)^(2-)`
`NO_(2)^(Θ)`

Solution :`S^(2-)+2HCIoverset(Delta)rarr underset(("Specific smell"))(underset("Rotten egg smell")(H_(2)Sdarr)+)2CI^(THETA)`
`S_(2)O_(3)^(2-) +2HCI overset(Delat)rarr underset("burning sulphur")underset("smell of")underset("Suffocating")(SO_(2)uarr+2CI^(Theta))+underset("white turbidity")underset("Yellow turbidity or")(Sdarr+H_(2)O)`
`CO_(3)^(2-)+2HCI overset(Delta)underset (or cold)rarr underset(HCO_(3)^(Theta)"also behacve SIMILARLY")underset("with BRISK effervescenes")underset("Odourless GAS evolves")(CO_(2)uarr+H_(2)O +2CI^(Theta))`


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