Calculate Oxidation Numbers Video Lessons

Concept:

# Problem: Place the following compounds in order of increasing oxidation state of nitrogen:NH2OH      N2H4      HNO2     NH+4      HNO3(A) HNO2 &lt; NH2OH &lt; N2H4 &lt; HNO3 &lt; NH+4(B) HNO3 &lt; HNO2 &lt; NH2OH &lt; N2H4 &lt; NH+4(C) NH+4 &lt; N2H4 &lt; NH2OH &lt; HNO2 &lt; HNO3(D) NH2OH &lt; N2H4 &lt; HNO2 &lt; NH+4 &lt; HNO3(E) N2H4 &lt; NH+4 &lt; HNO3 &lt; NH2OH &lt; HNO2

###### FREE Expert Solution

Calculate the oxidation state of N atom in each compound and arrange them to an increasing value

The rules for oxidation states are as follows:

A. General Rules:

1. For an atom in its elemental form (Zn, Cl2, C(graphite), etc.)    O.S. = 0

2. For an ion (Li+, Al3+, etc.)                                                       O.S. = charge

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###### Problem Details

Place the following compounds in order of increasing oxidation state of nitrogen:

NH2OH      N2H4      HNO2     NH+4      HNO3

(A) HNO2 < NH2OH < N2H4 < HNO3 < NH+4

(B) HNO3 < HNO2 < NH2OH < N2H< NH+4

(C) NH+4 < N2H4 < NH2OH < HNO2 < HNO3

(D) NH2OH < N2H4 < HNO2 < NH+4 < HNO3

(E) N2H4 < NH+4 < HNO3 < NH2OH < HNO2