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Author Question: Given H2(g) + (1/2)O2(g) H2O(l), H = 286 kJ/mol, determine the standard enthalpy change for the ... (Read 66 times)

Rafic Kaaki

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Question 1

Given  2Al(s) + (3/2)O2(g) → Al2O3(s),  ΔH°f = –1,670 kJ/mol for Al2O3 (s).
Determine ΔH° for the reaction 2Al2O3(s) → 4Al(s) + 3O2(g).
◦ –3,340 kJ/mol
◦ –1,670 kJ/mol
◦ –835 kJ/mol
◦ 1,670 kJ/mol
◦ 3,340 kJ/mol

Question 2

Given H2(g) + (1/2)O2(g) → H2O(l), ΔH° = –286 kJ/mol, determine the standard enthalpy change for the reaction 2H2O(l) → 2H2(g) + O2(g).
◦ ΔH° = –286 kJ/mol
◦ ΔH° = +286 kJ/mol
◦ ΔH° = –572 kJ/mol
◦ ΔH° = +572 kJ/mol
◦ ΔH° = –143 kJ/mol


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Marked as best answer by Rafic Kaaki on Nov 5, 2023

Jaclyn92G6

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Rafic Kaaki

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Reply 2 on: Nov 5, 2023
:D TYSM


essyface1

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Reply 3 on: Yesterday
Gracias!

 

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