For each reaction in the table below, write the chemical formulae of any reactants that will be oxidized in the second column of the table. Write the chemical formulae of any reactants that will be reduced in the third column.

      reaction                                     reactants oxidized         reactants reduced 

O2(g)+2Ca(s)---> 2CaO(s)                      ?                                        ?

Ni(s)+Cl2(g)---> NiCl2(s)                         ?                                        ?

4Cr(s)+S8(s)---> 4CrS2(s)                     ?                                        ?

QUESTION 1

In the acid-base reactions below, label each reactant as either an "acid" or "base". Also, predict the products that will form for each reaction. (For molecules with subscripts, use the following format: H₃PO₄ = H3PO4 )

8 points

QUESTION 2

Given the following redox reaction:

3 Cu⁺_(aq) + Fe_(s) → Fe³⁺_(aq) + 3 Cu_(s)

Label the reactants that are being oxidized and reduced, and also identify the oxidizing and reducing agents.

(For each label, choose from the letters on the right to match the reactant or product. Letters can be used multiple times, and not all letters necessarily need to be used.)

Write the chemical formulas of the reactants. Also write the chemical names and chemical formulas of the expected products

1.)Potassium iodide + Calcium Chloride

2.) Sodium Carbonate+ Lead Nitrate

3. Copper Sulfate + Potassium iodide

For each of the following reactions:

a) Write the oxidation number for each element above the element. b) Identify the atom being oxidized and reduced. C) Identify the oxidizing reactant and reducing reactant.

a. 3CuO(aq) + 2NH3 (aq) ---> 3Cu (s) + N2 (g) + 3H2O (l)

Oxidized: Reduced: Oxi. Reactant: Red. Reactant:

b. Mg (s) + 2HCl (aq) ----> Mg+2(aq) + 2Cl-1 (aq) + H2 (g)

Oxidized: Reduced: Oxi. Reactant: Red. Reactant: