Question

1. Classify each of the following as a combination, decomposition, single replacement, double replacement, or combustion reaction:

_______________                  2 Fe₂O₃(s) + 3 C(s) $\rightarrow$ 3 CO₂(g) + 4 Fe(s)

_______________                  2 KClO₃(s) $\rightarrow$ 2 KCl(s) + 3 O₂(g)

_______________                  2 C₃H₆(g) + 9 O₂(g) $\rightarrow$ 6 CO₂(g) + 6H₂O(g) + energy

_______________                  N₂(g) + 2 O₂(g) $\rightarrow$ 2 NO₂(g)

_______________                  BaCl₂(aq) + K₂SO₄(aq) $\rightarrow$ BaSO₄(s) + 2 KCl(aq)

2. Identify as an oxidation or reduction reaction:

	Oxidation	Reduction
O2 + 4 e-$\rightarrow$ 2 O2-
Ag $\rightarrow$ Ag+ + e-
Cr3+ + 3 e-$\rightarrow$ Cr
Ni $\rightarrow$ Ni2+ + 2 e-

3. Identify the reactant that is oxidized and which reactant is reduced:

	Reactant Oxidized	Reactant Reduced
Zn(s) + Cl2(g) $\rightarrow$ ZnCl2(s)
Cl2(g) + 2 NaBr(aq) $\rightarrow$ 2 NaCl(aq) + Br2(l)
2 PbO(s) $\rightarrow$ 2 Pb(s) + O2(g)
2 Fe3+(aq) + Sn2+(aq) $\rightarrow$ 2 Fe2+(aq) + Sn4+(aq)

Answer 1

'2 Fe2O3(5)+30(5) single Deplacement reaction. akoz (6) 12 KCl (5)+302(8) • Decomposition reaction. 2 C3H (9) +90219-> 600,(0)+ 6H2008)+ energy combustion reaction. N2(g) +20,9 2N02 (8) combination reaction. Boca (aq) + K2 504 (29) - Basoy(s) +2kd(ug Double replacement reaction. 2 ) Oq the 2037 4 Reduction reaction.

Ag ---- Agt te oxidation reaction. C234 +3e- co Reduction reaction. Ni » Ni2+ +2e L oxidation reaction. (3) Zn(s) + Cl2 (9) > Zncz (s) Reactant oxidised = Zn(s) Reactant reduced Clz (g' 4 012 (9) + NOB: (04) - NaC (99)+BYO L Reactant oxidised Bro (29) Reactant reduced = alz (9) 2 Pbo(s) t2Pb(s) + O₂ Cg y Reactant oxidised 0²- Reactant reduced: Pb2+

Fe3+ (44) +sn't(04) - Fe2+ (09) 4 shtag 11 Reactant oxidised Snat Reactant reduced= Fest e