Dihydrogen reacts with dioxygen (O_{2}) to form water. Write the name and formula of the product when the isotope of Hydrogen, which has one proton and one neutron in its nucleus is treated with oxygen. Will the reactivity of both the isotopes be the same towards oxygen? Justify your answer.

Answers (1)

 Deuterium (D) is the isotope of Hydrogen which contains one proton and one neutron.  Thus, on the reaction of water with deuterium, heavy water (deuterium oxide) is produced. Deuterium’s bond is stronger than the normal hydrogen bond, and thus H_{2} reacts more with deuterium than oxygen.

 

2D_{2} + O_{2} \rightarrow (heat) 2D_{2}O

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