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Which of the following statements is true concerning the decomposition of liquid water to form hydrogen...

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Chemistry

Which of the following statements is true concerning thedecomposition of liquid water to form hydrogen gas and oxygen gas?2H2O(l) → 2H2(g) + O2(g)

a. ΔH is greater than ΔU because the pressure is constant.

b. ΔH is less than ΔU because of the pressure–volume work doneby the gaseous products.

c. ΔH is less than ΔU because the atmosphere doespressure–volume work on the gaseous products.

d. ΔH equals ΔU because both are state functions.

e. ΔH is greater than ΔU because of the pressure–volume workdone by the gaseous products.

The Answer is E. But I need help in understand why that is andwhy all the other answers are wrong.

Answer & Explanation Solved by verified expert
4.0 Ratings (612 Votes)
Ok then here we are comparing the H and theUFirst lets remember the definitionsInternal energy U is definedas the energy associated with the random disordered motion ofmolecules The internal energy U might be thought of as theenergy required to    See Answer
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