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 29 times)

lb_gilbert · **on:** Mar 21, 2021

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.

xMRAZ · **Reply #1 on:** Mar 21, 2021

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