First slide

Group-17 or Halogen family

Question

Which one of the following represents the reaction between fluorine and cold NaOH (dil.)?

Moderate

A

$2 F_{2} + 4 NaOH ⟶ 4 NaF + 2 H_{2} O + O_{2}$
B

$3 F_{2} + 6 NaOH ⟶ 5 NaF + {NaFO}_{3} + 3 H_{2} O$
C

$F_{2} + 2 NaOH ⟶ NaF + NaOF + H_{2} O$
D

$2 F_{2} + 2 NaOH ⟶ 2 NaF + {OF}_{2} + H_{2} O$

Solution

2F₂+NaOH $\to$ 2NaF+OF₂+H₂O
F₂ is strong oxidising agent so it oxides oxygen and forms OF₂

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