Question

the sum of of the oxidation number in na2co3 is always equivalent to

Answer 1

Answer:

The carbonate ion is a polyatomic ion with an overall charge of -2. So the sum of the oxidation states of carbon and oxygen in the carbonate ion must be equal to -2.

Answer 2

Answer:

The oxidation number of Na2CO3 is 0.

Explanation:

• Oxidation number: The number of electrons share, lose or acquire by the atoms at the time of interaction between the atoms of the elements.
• Na: The oxidation number of Na = +1

        Here 2 Na atoms are present, so oxidation number = 2 × (+1) = +2

• C: The oxidation number of C = +4

        Here 1 C atom is present, so oxidation number = 1 × (+4) = +4

• 0: The oxidation number of O = -2

        Here 3 O atoms are present, so oxidation number = 3 × (-2) = -6

• Conclusion: Total oxidation number of Na2CO3

                              = +2 +4 - 6

                              = 0