1. How would you calculate the enthalpy change for the reaction H + Br—>2HBr. Given that the bond energies of H-H, Br-Br and H-Br are 435, 192 and 364 kj/mol respectively

  2. Mr.Vinstan what is the meaning of e-……………p+ and distance and number
    ? could you explain that to me? please

    1. e electron, p proton
      Attraction between them.
      Bond formation graph do u remember?