Question

Which of the following equations describes a single-replacement reaction?

A. 2N2O5 (g) = O2 (g) + 4NO2 (g)
B. 2Na (s) + Cl2 (g) = 2NaCl (s)
C. Cl2 (g) + 2Kl (s) = 2KCl (s) + l2 (g)
D. H2 (g) + Br2 (g) = 2HBr (g)

Answer 1

Answer: Option (C) is the correct answer.

Step-by-step explanation:

A chemical reaction in which more reactive metal or substance displaces one less reactive metal or substance then this type of reaction is known as single displacement reaction.

Thus, we can conclude that out of the given options, the reaction equation
`Cl_(2)(g) + 2KI(s) \rightarrow 2KCl(s) + I_(2)(g)`

As in this reaction, one chlorine atom replaces one iodine atom hence it is a single displacement reaction.

Answer 2

I think the correct answer from the choices listed above is option C. It would be Cl2 (g) + 2Kl (s) = 2KCl (s) + l2 (g) that describes a single-replacement reaction where Cl replaces I. Hope this answers the question. Have a nice day.