Chemistry
Redox Worksheet 1
Name_______________________________________________________________________
1. Is this reaction a redox reaction? Explain your answer.
2K + Br2
2KBr
2. Which substance loses electrons and which substance gains electrons in this reaction?
2Mg + O2
2MgO
3. Which substance loses electrons and which substance gains electrons in this reaction?
16Fe + 3S8
8Fe2S3
4. Which substance is oxidized and which substance is reduced in this reaction?
2Li + O2
Li2O2
5. Which substance is oxidized and which substance is reduced in this reaction?
2Fe + 3I2
2FeI3
6. Assign oxidation numbers to the atoms in each substance.
a. P
b. SO3
c. SO32-
d. Ca3(PO3)2
7. Assign oxidation numbers to the atoms in each substance.
a. NO
b. NO2
c. CrCl2
d. CrCl3
8. Assign oxidation numbers to the atoms in each substance.
a. CH2O
b. NH3
c. Rb2SO4
d. Zn(C2H3O2)2
9. Identify what is being oxidized and reduced in this reaction.
2NO + Cl2
2NOCl
10. Identify what is being oxidized and reduced in this reaction.
2KrF2 + 2H2O
2Kr + 4HF + O2