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chemistry

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is this true or false? i think its false because isnt it spontaneous if its positive

When (triangle i think its called delta) H for a reaction is large and positive, the reaction is not expected to be spontaneous.

  • chemistry -

    change of heat, yeah then it requires heat which means it should be non-spontaneous . ..

  • chemistry -

    Delta H is positive, the reaction is endothermic therefore not spontaneous.

  • chemistry -

    delta G = delta H -TdeltaS.
    Generally, but not always, if delta H is negative, then delta G is more likely to be negative, and the reaction will be spontaneous. But delta H can be + and the temperature can be high enough to make the TdeltaS term override the + delta H and delta G can be negative and the reaction spontaneous.

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