What type of reaction is Cl2 + 2KBr = Br2 + 2KCl?

Single Displacement Reaction

Explanation: For this reaction Chlorine atom displaces Bromine and Cl pairs up with Potassium K. The generic form of the reaction can also be expressed in the following form:

A + BC => C + AB

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

if you mean hydrogen and oxygen then water is the product