Question

17. The following questions show the chemistry of the Fuchsin test. a. [3pts, Fuchsin (rosaniline hydrochloride) is also known as Schiff's reagent because it reacts with aldehydes to form imines. Rosaniline hydrochloride exists as several resonance structures. Using curved arrow notation, complete the resonance structures below and explain why the reagent shows an intense magenta color. NH2 Fuchsin Explanation: b. llpt Complete the reaction given below and explain why the addition of bisulfite results in loss of color. Fuchsin bisulfate Explanation:

Answer 1

( h Ver Nilly anyugated * Explains The reagent has a highly struchne due to which it absorb light in visible region and omit light as magenta colar

- SOH CH3 Nille Esbencfion's 'After addition of bisulfite the motecule loose its conjugation. so light no longer absorb at visitte range. so, the molecule become colodlers

C) syy = 02/01 Rama & SOH . Who Rh 503