Methyl orange is made by diazotising sulfanilic acid and coupling with N,N-dimethylaniline at pH 4-5. Select the correct statements.

Athe azo group enters ortho to the $N (CH X_{3}) X_{2}$ group because the para position is blocked
Bthe azo group enters para to the $N (CH X_{3}) X_{2}$ group
Cthe sulfonate group makes the dye soluble in water
Dthe electrophile in the coupling step is the aryldiazonium ion

Answer: B, C, D

The diazonium ion attacks the activated ring of N,N-dimethylaniline at the free para position, so the last statement is false (para is not blocked). The

SO X_{3} - Na X^{+}

group gives water solubility, and the electrophile is the diazonium ion. The first three statements are correct.

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Methyl orange is made by diazotising sulfanilic acid and coupling with N,N-dimethylaniline at pH 4-5. Select the correct statements.

Answer: B, C, D

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