Oxidation Number Chemistry Example 1

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Example 1

easy
Assign oxidation numbers to each element in H2SO4\text{H}_2\text{SO}_4.

Solution

  1. 1
    Rule: H is +1+1 (in compounds with nonmetals). O is −2-2 (in most compounds).
  2. 2
    Let S = xx. Sum of oxidation numbers = 0 (neutral compound).
  3. 3
    2(+1)+x+4(−2)=0⇒2+x−8=0⇒x=+62(+1) + x + 4(-2) = 0 \Rightarrow 2 + x - 8 = 0 \Rightarrow x = +6.

Answer

H: +1,  S: +6,  O: −2\text{H: } +1,\; \text{S: } +6,\; \text{O: } -2
Oxidation numbers are assigned using a set of rules. They help us track electron transfer in redox reactions and predict the products of chemical reactions.

About Oxidation Number

A number assigned to each atom in a compound using a set of rules, representing the hypothetical charge that atom would carry if all bonds.

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More Oxidation Number Examples

Example 2 medium

Assign oxidation numbers to each atom in [formula] and determine the oxidation number of manganese.

Example 3 easy

What is the oxidation number of nitrogen in [formula]?

Example 4 hard

In the reaction [formula], determine the oxidation number of iron and carbon on each side. Which ele

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