51. How much heat (in kJ) is evolved (under standard conditions) when 103.23 g of copper...
51. How much heat (in kJ) is evolved (under standard conditions) when 103.23 g of copper reacts to form copper(II) oxide?
Homework Answers
Ans- 2 Cu + O2 -----------> CuO
According to my information the heat of formation of CuO is -157.3
kJ of heat when ONE mol of Cu is burned.
103.23 g of Cu is 103.23 / 63.55 g/mol = 1.624 mol. Therefore the
amount of heat given off should be
1.624 mol x -157.3 kJ/mol = -255.45 kJ
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