When 4 moles of aluminum are allowed to react with an excess of chlorine gas, Cl₂ , how many moles of aluminum chloride are produced?

Question

Quizplus · Accepted Answer

The balanced chemical equation for the reaction between aluminum and chlorine gas is:

2Al + 3Cl₂ → 2AlCl₃

This tells us that for every 2 moles of Al that react, we need 3 moles of Cl₂. However, the problem states that we have an excess of chlorine gas, so we don't need to worry about the amount of chlorine.

We are given 4 moles of aluminum, and from the balanced equation, we know that 2 moles of aluminum produces 2 moles of aluminum chloride. Therefore, 4 moles of aluminum will produce:

(4 moles Al) x (2 moles AlCl₃/2 moles Al) = 4 moles AlCl₃

So the answer is D, 4 moles.

When 4 Moles of Aluminum Are Allowed to React with an Excess