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Author Question: For the reaction H2O(l) H2O(g) at 298 K and 1.0 atm, H is more positive than E by 2.5 kJ/mol. This ... (Read 40 times)

lb_gilbert

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Question 1

For a particular process, q = –17 kJ and w = 21 kJ. Which of the following statements is false?

Heat flows from the system to the surroundings.
The system does work on the surroundings.
ΔE = +4 kJ
The process is exothermic.
None of these are false.

Question 2

For the reaction H2O(l) → H2O(g) at 298 K and 1.0 atm, ΔH is more positive than ΔE by 2.5 kJ/mol. This quantity of energy can be considered to be:

the heat flow required to maintain a constant temperature.
the work done in pushing back the atmosphere.
the difference in the H–O bond energy in H2O(l) compared to H2O(g).
the value of ΔH itself.
none of these are correct.


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Marked as best answer by lb_gilbert on Mar 21, 2021

xMRAZ

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lb_gilbert

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Reply 2 on: Mar 21, 2021
Wow, this really help


isabelt_18

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

 

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