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Nadine asked in Science & MathematicsChemistry · 1 decade ago

Sodium Thiosulphate and Hydrochloric acid reaction?

Is this reaction an endothermic or exothermic reaction? And does anybody know a website where i could find bond energy values for this reaction?

Thank you

1 Answer

  • 1 decade ago
    Favourite answer

    The reaction is exothermic

    Bond energies are not really relevant for this reaction as it takes place in solution. Bond energies can only be used to calculate overall energy changes for reactions which take place in the gas phase. In reactions occurring in solution, there are too many other things going on (solvation, etc) for bond energies to give an accurate estimate of the overall energy change.

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