Chemistry, asked by saurabhbamborde8, 11 months ago

whatvis the oxidation number of N in hydrazoic acid

Answers

Answered by Namshii
1
Oxidation state between similar atom results in zero oxidation number i.e. between atoms 2 and 3 and between atoms 3 and 4. So now we have to calculate the oxidation number between 1 and 2 i.e between H and N. Since there is 1 bond formed -1 oxidation number will be given to more electronegative atom, which here is N and +1 will be given to more electropositive atom which here is H. Finally we can conclude that H will have +1, N(1) will have -1 and N(2,3) will both have 0 oxidation number. Since -1 is the total oxidation number between 3 N atoms, the average oxidation number on N will be -1/3.
We can use a equation to solve this. Let the average charge on N atom is x. The oxidation number on 3 N atoms will be 3x. H will have +1 oxidation number as discussed above. Since the total charge on this whole molecule is 0, we can make a equation in which we balance the total oxidation state of the atom to the total charge on the molecule, i.e. 0
Total oxidation no. = Net charge on atom.

Oxidation number on H + Total Oxidation number on N = 0

+1 + 3x =0

By solving, we get the average oxidation number is -1/3, which is same as above.

We can solve by any method, but the second one is my preferred, as there is less chance of mistakes in that method.
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