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A

Anonymous

Feb 18, 2025

Consider the following reaction. 2H2 + O2 —> 2H2O. Change of H(rxn) = -484kJ.?

Consider the following reaction: 2H₂ + O₂ → 2H₂O, with a change in enthalpy (ΔH) of -484 kJ.

Which answer best describes the heat transfer that occurs when 1.5 moles of H₂ react?

a. 726 kJ absorbed
b. 363 kJ absorbed
c. 484 kJ absorbed
d. 726 kJ released
e. 363 kJ released
f. 484 kJ released

1 Answers

A
Anonymous

Dec 10, 2024

Because delta H is negative we know the reaction is exothermic (heat is released).

Since we have less H2 than 2 mole this will be less than 484kJ. Therefore your answer is (e) 363 kJ released.

Enjoy 🙂

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