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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Redox Reactions

NTA Abhyas 2020 · Chemistry · Redox Reactions

The combustion of sodium in excess air yields a higher oxide. What...

The combustion of sodium in excess air yields a higher oxide. What is the oxidation state of the oxygen in the product? Neglect the negative sign.

Correct answer

1

Step-by-step solution

Na+O2→Na2O,Na2O+12O2→Na2O2Na + {O}_{2} \to {Na}_{2}O, {Na}_{2}O + \dfrac{1}{2}{O}_{2} \to {Na}_{2}{O}_{2}

It exists as 2Na+2{Na}^{+} and O22−{O}_{2}^{2 -}

So oxidation state of O is −1- 1

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