Chem 120 Test 3 Question and answers rated A+ 2025
1. ON for pure elements 0
2. ON for single-atom ions Charge
3. ON of flourine atoms -1 in all compounds
4. ON of oxygen atoms -2 unless they're bonded to F where ON = +2 or bonded to
another O
in a peroxide or superoxide
5. ON of hydrogen atoms +1 except where H is the more electronegative element and it's
-1
6. ON values of a Sum to zero
neutral compound
7. ON values of a polyatom- Sum to the charge on the ion
ic ion
8. w<0 System did work on surroundings, energy left the system
9. w>0 system had work done on it, energy entered the system
10. ΔS >0 spontaneous
11. ΔG < 0 spontaneous, forward reaction favored
12. ΔG > 0 non-spontaneous, reverse reaction favored
13. ΔEcell > 0 spontaneous forward
14. ΔEcell < 0 spontaneous reverse
15. High Eº Good oxidizing agent, poor reducing agent
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1. ON for pure elements 0
2. ON for single-atom ions Charge
3. ON of flourine atoms -1 in all compounds
4. ON of oxygen atoms -2 unless they're bonded to F where ON = +2 or bonded to
another O
in a peroxide or superoxide
5. ON of hydrogen atoms +1 except where H is the more electronegative element and it's
-1
6. ON values of a Sum to zero
neutral compound
7. ON values of a polyatom- Sum to the charge on the ion
ic ion
8. w<0 System did work on surroundings, energy left the system
9. w>0 system had work done on it, energy entered the system
10. ΔS >0 spontaneous
11. ΔG < 0 spontaneous, forward reaction favored
12. ΔG > 0 non-spontaneous, reverse reaction favored
13. ΔEcell > 0 spontaneous forward
14. ΔEcell < 0 spontaneous reverse
15. High Eº Good oxidizing agent, poor reducing agent
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