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Which of the following is formed as a by product of decomposition of arenediazonium fluoroborate to give fluorobenzene?

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in Chemistry – Class 12 by (188k points)
Which of the following is formed as a by product of decomposition of arenediazonium fluoroborate to give fluorobenzene?

(a) BF3

(b) BH3

(c) H3BO3

(d) BN

The question was asked in an internship interview.

Asked question is from Diazonium Salts Chemical Reactions topic in section Amines of Chemistry – Class 12

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Correct choice is (a) BF3

The explanation: Arenediazonium fluoroborate has four fluorine atoms put of which one forms fluorobenzene. The other three fluorine atoms combine with boron from BF4^– to form boron trifluoride along with the liberation of nitrogen gas.

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