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For testing halogens in an organic compound with AgNO_(3) solution, sodium extract (Lassaigne's test) is acidified with dilute HNO_(3). What will happen if a student acidifies the extract with dilute H_(2)SO_(4) in place of dilute HNO_(3) ? |
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Answer» Solution :`AgNO_(3)` reacts with DILUTE `H_(2)SO_(4)` to form a white precipitate of silver SULPHATE. `2 AgNO_(3) (aq)+H_(2)SO_(4)(aq) rarr underset("(White ppt.)")(Ag_(2)SO_(4)(s)) +2 HNO_(3) (aq)` This precipitate INTERFERES with the precipitate of silver halide `(AgX)` which is formed in the Carius method for the estimation of halogens |
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