why bond dissociation enthalpy value for h2 is high ?
Answers
Answer:
Urea is the main nitrogenous waste in the human blood, through filtration is it removed from the blood. Explanation: Urea is the major nitrogenous waste in the humans. It's removed from the body via filtration in the kidneys, transport to temporary storage in the urinary bladder, and removal by urination.
Answer:
The bond dissociation enthalpy is the energy needed to break one mole of the bond to give separated atoms - everything being in the gas state.
For covalent bonds, bond energies and bondlengths depend on many factors:
electron afinities,
sizes of atoms involved in the bond,
differences in their electronegativity,
and the overall structure of the molecule.
There is a general trend in that the shorter the bondlength, the higher the bond energy.
Hydrogen has a relatively small atom and short bondlength hence very strong strong attractions between the atoms which will consenquently increase its bond dissociation ethalpy.