E. What type of reaction is the following? 2KCIO3 2KCI + 302 E. What type of reaction is the following? Zn + 2HCI → ZNCI2 + H2 D. What type of reaction is the following? 2C2H2 + 502 4CO2 + 2H20

10. In the reaction, Fe203(s) + 3CO(g) 2Fe(l) + 3C02(g) --- a. carbon monoxide is reduced c. carbon monoxide is the oxidizing agent L b. iron(III) oxide is oxidized d. iron(III) oxide is the oxidizing agent

What is the oxidation state of element X in the compound H3X30? a. +3 b. +2 с. +1 d. 0 е. -1 f. -2 g. -3

Determine the oxidation number for the indicated atom in each presented formula. 1. What is the oxidation number of "N" in HNO3? [Select] 2. What is the oxidation number of "N" in NH4*? [Select] 3. What is the oxidation number of "Ca" in Ca(OH)₂? [Select] 4. What is the oxidation number of "F" in F₂? [Select] 5. What is the oxidation number of "N" in NF3? [Select] 6. What is the oxidation number of "Si" in SiS₂? [Select] 7. What is the oxidation number of "O" in HCO3? [Select] 8. What is the oxidation number of "Cr" in Cr₂O72-? [Select]

Put these three molecules in the order of most oxidized to least oxidized. H. Н—с—С H. OH н нссн нн н Н-С-с-ОН нн >

For each reaction, indicate which elements are oxidized and which are reduced. a. WO2 + 3H2 → W + 3H20 Oxidized: Reduced: b. 2Na + Cl2 → 2NACI Oxidized: Reduced: C. 2 Fe2O3 + 3C 4Fe + 3CO2 Oxidized: Reduced:

4. What will be the correct and balance product/s of the given chemical reaction which undergone a single replacement reaction; Zn + CuCl₂ A. ZnCl₂ + Cu C. 2 ZnCl + Cu B. Cl₂Cu₂+ Zn D. No reaction will occur 5. What will be the correct and balance product/s of the given chemical reaction which undergone a double replacement reaction; BaCl₂ + Na₂SO4 → ? A. BaSO4 + NaCl C. 2 BaSO4 + NaCl D. 2 BaSO4 + 2 NaCl B. BaSO4 + 2 NaCl