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Author Question: For the reaction H2(g) + 1/2 O2(g) H2O(g) rH = -241.8 kJ/mol, what quantity of heat, in kJ, evolved ... (Read 29 times)

armygirl

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Question 1

For the reaction H2(g) + 1/2 O2(g) → H2O(g) Δr = -241.8 kJ/mol,
what quantity of heat is liberated by the reaction of 10.0 L of O2 measured at 22.0 °C and 742 mmHg?
◦ 120 kJ
◦ 2610 kJ
◦ 1310 kJ
◦ 195 kJ
◦ 97.5 kJ

Question 2

For the reaction H2(g) + 1/2 O2(g) → H2O(g) Δr = -241.8 kJ/mol,
what quantity of heat, in kJ, evolved when a 72.0 g mixture containing equal parts of H2 and O2, by mass, is burned?
◦ 8630 kJ
◦ 4860 kJ
◦ 1088 kJ
◦ 272 kJ
◦ 544 kJ


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Marked as best answer by armygirl on Jul 8, 2021

matt95

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armygirl

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Reply 2 on: Jul 8, 2021
Gracias!


tkempin

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Reply 3 on: Yesterday
Excellent

 

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