The reaction Cl2 (g) + NaI (s) → I2 (s) + NaCl (s) is an example of which of the following reaction types?

Question

(Choose ALL that apply.)

a. Acid-Base (Neutralization)
b.	Combination (Synthesis)
c.	Combustion
d.	Decomposition
e.	Double Displacement (Double Replacement, Exchange)
f.	Oxidation-Reduction (Redox)
g.	Precipitation
h.	Single Displacement (Single Replacement)

Answer 1

it is also a redox reaction with Cl is reduced and I - is oxidized.

Answer 2

It is a single replacement :)

Note how the partners at the dance switched. Na (sodium) came to the dance with I (iodine), but left with Cl (chlorine). Iodine then left alone.

A double displacement would be if both Na and Cl came with partners, like NaI and KCl, and then left with each other's dates -> NaCl and KI