Elemental fluorine and bromine react to form the diatomic interhalogen compound bromine monofluoride according to the equation below.F2(g) + Br2(l) → 2 BrF(g)Which of the following statements correctly describes the reaction?A.The fluorine atoms are oxidized, and their oxidation number changes from 0 to +1.B.The fluorine atoms are reduced, and their oxidation number changes from 0 to −2.C.The bromine atoms are oxidized, and their oxidation number changes from 0 to +1.D.The bromine atoms are reduced, and their oxidation number changes from 0 to −1
Question
Elemental fluorine and bromine react to form the diatomic interhalogen compound bromine monofluoride according to the equation below.F2(g) + Br2(l) → 2 BrF(g)Which of the following statements correctly describes the reaction?A.The fluorine atoms are oxidized, and their oxidation number changes from 0 to +1.B.The fluorine atoms are reduced, and their oxidation number changes from 0 to −2.C.The bromine atoms are oxidized, and their oxidation number changes from 0 to +1.D.The bromine atoms are reduced, and their oxidation number changes from 0 to −1
Solution
The correct answer is C. The bromine atoms are oxidized, and their oxidation number changes from 0 to +1.
Here's why:
In the reaction F2(g) + Br2(l) → 2 BrF(g), the fluorine (F) and bromine (Br) start with an oxidation number of 0 because they are in their elemental form.
In the product, bromine monofluoride (BrF), the fluorine has an oxidation number of -1 because it is more electronegative than bromine. This means that the bromine must have an oxidation number of +1 to balance the charge.
Since the oxidation number of bromine increases from 0 to +1, it is being oxidized. Therefore, option C is correct.
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