Worksheet Assigning Oxidation Numbers Key - Edubirdie

University:
Minnesota State University Moorhead
Course:
CHEM-150 | General Chemistry I
Academic year:

2019
Views:

409

Pages:

1
Author:

ilikemyicons0y5

WORKSHEET – ASSIGNING OXIDATION NUMBERS Name _______________________________________ Period _____ Oxidation Number Rules: 1. A pure element has an oxidation number of 0. 2. The oxidation number of an element in a monatomic ion equals the charge of the ion. 3. The sum of the oxidation number of all the elements in a compound equals 0. 4. The sum of the oxidation numbers of all the elements in a polyatomic ion equals the charge on the ion. Directions: In the following questions, give the oxidation number of the indicated atoms/ion. N3+ 1. N in N2O3 16. C in CH4 C4+ 2. S in H2SO4 S6+ 3. C 17. Mn in MnO2 Mn4+ C0 18. S in SO32- S4+ 4. C in CO 19. Mg2+ Mg2+ C2+ Na+ 5. Na in NaCl 6. H in H2O 7. Ba in BaCl2 H+ 20. Cl- Cl21. O2 O20 Ba2+ 22. P4 P40 8. N in NO2- N3+ 23. Na in Na2S 9. S in Al2S3 S2- 24. S in H2S 10. S in HSO4- S6+ Na+ S2- 25. Ca2+ Ca2+ 11. Cl in Fe(ClO2)3 Cl3+ 26. C in CN- C4+ 12. Fe in Fe(ClO2)3 Fe3+ 27. H in OH- H+ 13. N in NO3- N5+ 28. Mn in KMnO4 Mn7+ 14. Cu2+ Cu2+ 29. I in Mg(IO3)2 I5+ 15. Zn2+ Zn2+ 30. C in C2O42- C2+

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