The bond dissociation energy of H2 is 435 kJ/mol. The bond dissociation energy of a typical carbon-carbon single covalent bond is 347 kJ/mol. What can be concluded from this information

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the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.