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) â†’ 2H2(g) + O2(g)
a. Î”H is greater than Î”U because the pressure is constant.
b. Î”H is less than Î”U because of the pressureâ€“volume work doneby the gaseous products.
c. Î”H is less than Î”U because the atmosphere doespressureâ€“volume work on the gaseous products.
d. Î”H equals Î”U because both are state functions.
e. Î”H is greater than Î”U because of the pressureâ€“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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