For testing halogens in an organic compound with solution, sodium extract (Lassaigne’s test) is acidified with dilute
. What will happen if a student acidifies the extract with dilute
in place of dilute
?
Elements like nitrogen, halogens, sulphur and phosphorous present in organic compounds converted into ions by fusing with sodium metal which is then plucked in distilled water getting sodium extract. On adding diluted in place of diluted HNO3 for testing halogens by
, a white precipitate of
is formed. This will lead to the wrong result of chloride. Hence, only
is used instead of diluted
.