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Author Question: The standard enthalpy of formation for CuSO4 5 H2O(s) is -2278.0 kJ/mol at 25 C. The chemical ... (Read 139 times)

beccaep

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Question 1

The specific heat of copper is 0.385 J g-1 K-1. If 34.2 g of copper, initially at 21.0 °C, absorbs 4.689 kJ, what will be the final temperature of the copper?
◦ 21.4 °C
◦ 23.8 °C
◦ 356 °C
◦ 377 °C

Question 2

The standard enthalpy of formation for CuSO4 ∙ 5 H2O(s) is -2278.0 kJ/mol at 25 °C. The chemical equation to which this value applies is:
◦ Cu(s) + S(s) + 5 H2O(g) + 2 O2(g) → CuSO4 ∙ 5 H2O(s)
◦ Cu(s) + S(s) + 9/2 O2(g) + 5 H2(g) → CuSO4 ∙ 5 H2O(s)
◦ Cu(s) + SO4(g) + 5 H2O(g) → CuSO4 ∙ 5 H2O(s)
◦ Cu(s) + S(s) + 5/9 O2(g) + 5 H2(g) → CuSO4 ∙ 5 H2O(s)
◦ 2 Cu(s) + 2 SO2(g) + 5 H2O(g) → 2 CuSO4 ∙ 5 H2O(s)


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Marked as best answer by beccaep on Jul 8, 2021

frogdreck123456

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beccaep

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Reply 2 on: Jul 8, 2021
Great answer, keep it coming :)


isabelt_18

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Reply 3 on: Yesterday
Excellent

 

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