JEE Main 2016 · 10 Apr · Shift 1 · Chemistry Q56

← JEE Main 2016 · 10 Apr · Shift 1

ChemistrySingle correct+4 / -1Question 56 of 90

Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with $\ce{HBF4}$ . Which of the following conditions is correct about this reaction ?

Only heat

\ce{NaNO2/Cu}

\ce{Cu2O/H2O}

NaF/Cu

Answer and worked solution

Official answer: A

In the Balz-Schiemann reaction the diazonium fluoroborate is simply heated: $\ce{ArN2+BF4- -> ArF + N2 + BF3}$ .

Topics:Diazonium salts

← Previous question Next question →

JEE Main 2016 · 10 Apr · Shift 1, Chemistry question 56