hahahahiwannadieplease Posted March 2, 2019 Report Share Posted March 2, 2019 so im currently doing an enthalpy change lab and im not getting anywhere near the theoretical value. the reaction is a single replacement exothermic reaction (Zn+CuSO4-->ZnSO4+Cu) The solution should be 1.0M at 25mL and the Zn added is 6g. The theoretical value of the enthalpy change is -217 kJ/mol but I currently have -19.68 kJ/mol. i'm so confused about how this is working??? Reply Link to post Share on other sites More sharing options...
kw0573 Posted March 2, 2019 Report Share Posted March 2, 2019 The actual reacted amount should be used to calculate enthalpy change, not what you added to the solution. Reply Link to post Share on other sites More sharing options...
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