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What are enthalpy change of hydration values always negative?

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    Is it just the fact that it's a bond making process and that more energy is released that taken in to break bonds?

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    Just quoting in Puddles the Monkey so she can move the thread if needed
    (Original post by Puddles the Monkey)

    Bonds are being formed, bonds being formed is exothermic, these bonds are between the Metal positive ion and one of the lone pair of electrons on O , due to water being polar, or the negative ion and the delta H+
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