Aluminum chloride and cesium undergo a single replacement reaction. What is the correct chemical equation for this reaction?

a. AlCl3 + 3Cs yields No Reaction

b. AlCl2 + 2Cs yields 2CsCl + Al

c. AlCl3 + 3Cs yields 3CsCl + Al

d. 2AlCl3 + 6Cs yields 2AlCs3 + 3Cl2

The answer is c. AlCl3 + 3Cs - > Al + 3CsCl. First you already know this reaction is a single replacement reaction. And next, the Al ion is usually + 3, Cs ion is usually + 1.

Answer is C.

Explanation;

Single replacement reaction is a chemical reaction between an element and a compound. The element takes the position of another element in the compound by replacing.

Common equation is

A + BC → AC + B

Al is in 13th group of the periodic table. Hence, Al forms Al³ ⁺ by losing 3 electrons. Likewise, Cl is in 17th group of the periodic table and forms Cl ⁻ by gaining one electron. Hence aluminium chloride can be written as AlCl ₃.

Cs is in 1st group of the periodic table. Hence, Cs tends to form Cs ⁺ by losing an electron.

The reaction between Cs ⁺ and Cl ⁻ will form CsCl.

Since, this is a single replacement reaction, Al in the AlCl ₃ is replaced by Cs and CsCl is formed. The balanced reaction equation is

AlCl₃ + 3Cs → 3CsCl + Al