Copper (II) Chloride and Aluminum Reaction (done using a calorimeter): 1. calcul

Question

Copper (II) Chloride and Aluminum Reaction (done using a calorimeter):

1. calculate the kilojoules of heat produced by the reaction, assuming that no energy left the calorimeter. The specific heat of the solution is 3.96 J/g-°C (include the mass of the aluminum foil in the total mass of the solution).

2. Calculate the change in enthalpy of reaction for each trial, express as kilojoules per mole of solid copper (II) chloride dihydrate reacted. Be sure to include correct sign for ?H.

~If you could just explain/ show the first trial then I can do the second trial. Would really help out for question 2.~

Explanation / Answer

Q = m.c.T

Q cu solution = (3.96 J/(g C))×150 g ×(53.2C26.6C) = 7095.43 J

Q Al = (3.96 J/(g C))×0.822 g ×(53.2C26.6C) = 86.58 J

Qcalorimeter = (QCu solution+QAl) = (7095.43 J+86.58 J) = 7008 J

Qreaction = Qcalorimeter

delta H = -7008J

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