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Author Question: Given the following H values, H2(g) + O2(g) H2O(l) Hf = 285.8 kJ/mol H2O2(l) H2(g) + O2(g) ... (Read 48 times)

lrhoads

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on: Nov 5, 2023

Question 1

Find ΔH°rxn for the reaction
         CH4(g) + 2O2(g) → CO2(g) +  2H2O(l).
         [ΔH°f (CH4(g)) = –74.8 kJ/mol; ΔH°f (CO2(g)) = –393.5 kJ/mol; ΔH°f (H2O(l)) = –285.5 kJ/mol]


Question 2

Given the following ΔH° values,
         H2(g) + O2(g) → H2O(l)   ΔH°f = –285.8 kJ/mol
         H2O2(l) → H2(g) + O2(g)     ΔH°rxn = 187.6 kJ/mol
calculate ΔH°rxn for the reaction H2O2(l) → H2O(l) + O2(g),
Chemistry ¦ Chang, Goldsby ¦ 11th Edition
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Marked as best answer by lrhoads on Nov 5, 2023

mllong

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Reply #1 on: Nov 5, 2023
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lrhoads

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Reply 2 on: Nov 5, 2023
Thanks for the timely response, appreciate it

momolu

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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