Error in Calculation of EDissolution?

  • #1
I calculated the Edissolution of a reaction and resulted in a negative number. However, during the wet lab the reaction was clearly endothermic since there was a drop in temperature. I used the equation:

∆Edissolution = Ccup∆Tcup/mass of salt

What is the reason for the negative number? Would i consider the negative sign as a mere drop in temperature and not as a factor contributing as to wether the reaction is endothermic or exothermic?
 

Answers and Replies

  • #2
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I calculated the Edissolution of a reaction and resulted in a negative number.
Can you show us this calculation, please?
wether the reaction is endothermic or exothermic?
What do you know about endothermic and exothermic reactions?
 

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