# Problem: Assign oxidation numbers to each element of the following equations.Ag(s) + CN-(aq) + O2(g) → Ag(CN)2-(aq) + H2O(l)NO2-(aq) + Al(s) → NH3(g) + AlO2-(aq)

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###### FREE Expert Solution

We’re being asked to determine the oxidation states of each element in the given reactions.

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

B. Specific Rules:

1. Group 1A              O.S. = +1

2. Group 2A              O.S. = +2

3. Hydrogen              O.S. = +1, with nonmetals

O.S. = –1 with metals and boron

4. Fluorine                 O.S. = –1

5. Oxygen                  O.S. = –1 in peroxides (X2O2, X = Group 1A)

O.S. = –1/2 in superoxides (XO2, X = Group 1A)

O.S. = –2 in other compounds

6. Group 7A              O.S. = –1 (except when bonded to O)

96% (57 ratings)
###### Problem Details

Assign oxidation numbers to each element of the following equations.

Ag(s) + CN-(aq) + O2(g) → Ag(CN)2-(aq) + H2O(l)

NO2-(aq) + Al(s) → NH3(g) + AlO2-(aq)

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Calculate Oxidation Number concept. If you need more Calculate Oxidation Number practice, you can also practice Calculate Oxidation Number practice problems.

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Based on our data, we think this problem is relevant for Professor Thadison's class at UNI.