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i get it wrong every time. destroyer gc, #142.
ammonium nitrate will dissolve in water at 25C, and a decrease in temp is noted. which of the following is true?
they say pos. deltaH, pos. deltaS - WHY?
the way i reason it's NOT because the reaction appears spontaneous from the way they write it, but positive deltaH and S are only spontaneous at high temp. 25C is not a high temp! or is "high temp" a relative term?
i guess i can see that a decrease in temp = endothermic and so deltaH would be positive, but it's confusing.
ammonium nitrate will dissolve in water at 25C, and a decrease in temp is noted. which of the following is true?
they say pos. deltaH, pos. deltaS - WHY?
the way i reason it's NOT because the reaction appears spontaneous from the way they write it, but positive deltaH and S are only spontaneous at high temp. 25C is not a high temp! or is "high temp" a relative term?
i guess i can see that a decrease in temp = endothermic and so deltaH would be positive, but it's confusing.