Answer to Question #233206 in Organic Chemistry for Jese Junior

Question #233206

An experiment to measure the enthalpy change for the reaction of aqueous copper(II) sulfate, CuSO4(aq) and zinc, Zn(s) was carried out in a coffee cup calorimeter as follows. Cu2+(aq) + Zn(s) → Cu(s) + Zn2+(aq)

50.0 cm3 of 1.00 mol dm–3 copper(II) sulfate solution was placed in a polystyrene cup and its average temperature after three readings was noted to be 25OC and the zinc powder was added . The final temperature was noted to be 91.5 OC. Calulate the heat of the reaction in kJ 


1
Expert's answer
2021-09-07T23:28:19-0400

"\u2206T=91.5\u221225=66.5\u00b0C"


Moles = "1.00\u00d7\\frac{50.0}{1000}=0.05moles"


"Mass= 159.609\u00d70.05=7.98grams"


"Heat = 4.18 \u00d7 7.98 \u00d7 66.5 =2,218.2kJ"


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