Substances X and Y consists of molecules X₂ and Y₂ respectively. When the two elements react, they form a molecule of XY. The X-X bonds are...

      

Substances X and Y consists of molecules X₂ and Y₂ respectively. When the two
elements react, they form a molecule of XY. The X-X bonds are as strong as Y-Y bonds.
But the X-Y bond is stronger than both X-X and Y-Y bonds.

a) Is the above reaction exothermic or endothermic? Give a reason for your answer
b) Draw an energy level diagram for the reaction in (a) above.

  

Answers

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a) Exothermic:- More energy will be released when X-Y bonds are formed than
the energy required to break both X-X and Y-Y bond OR X-Y is stronger than both XX
and Y-Y bonds.

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sharon kalunda answered the question on May 22, 2019 at 14:12

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