In which of the following reactions has the oxidation number of nitrogen increased?

a

2NO(g) + Br2(l) → 2NOBr(l)

b

2NO(g) + O2(g) → 2NO2(g)

c

FeSO4(aq) + NO(g) → Fe(NO)SO4(s)

d

2NO(g) + Cl2(g) → 2NOCl(l)

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Explanation

Correct Option
b

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Discussions (14)

Emmanuel24458
2 years ago

To determine the change in oxidation number, you need to compare the oxidation states of nitrogen in the reactants and products. Let's analyze each reaction:

A. 2NO(g) + Br2(l) → 2NOBr(l)
Nitrogen goes from +2 in NO to +2 in NOBr. No change.

B. 2NO(g) + O2(g) → 2NO2(g)
Nitrogen goes from +2 in NO to +4 in NO2. Oxidation number has increased.

C. FeSO4(aq) + NO(g) → Fe(NO)SO4(s)
Nitrogen goes from +2 in NO to +2 in Fe(NO)SO4. No change.

D. 2NO(g) + Cl2(g) → 2NOCl(l)
Nitrogen goes from +2 in NO to +3 in NOCl. Oxidation number has increased.

So, the reactions where the oxidation number of nitrogen has increased are B and D.

Jikamana1
3 years ago

why not A

3BYKE
4 years ago

it's also increased in d from +2 to +3

Proprime
8 months ago

the correect answer is b. no argument

Diala Chidiebere
11 years ago

Correct, the oxidation number nitrogen increase from +2 to +4

Abisolakehinde1970
2 months ago

The correct answer is B
increase from +2 to +4

Efe14
5 months ago

BUT IF YOU CALCULATE ALL THE OXIDATION STATE FOR NITROGEN IN EACH OF THE COMPOUNDS THIS IS WHAT YOU GET;
OPTION A : +2 TO +3 [INCREASE]
OPTION B : +2 TO +4 [STILL INCREASE]
OPTION C : +2 TO +2 [NO CHANGE AT ALL]
OPTION D : +2 TO +3 [INCREASE]

Calebedet
5 months ago

Why

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