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Deffense [45]
4 years ago
9

Which reactant is limiting

Chemistry
1 answer:
olga2289 [7]4 years ago
5 0

The limiting reactant is Cl₂ (chlorine).

Explanation:

We have the following chemical reaction:

2 Al (s) + 3 Cl₂ (g) → 2 AlCl₃ (s)

And we start with 2.7 g of Al and 3.12 g of Cl₂.

First we calculate the number of moles of each reactant.

number of moles = mass / molar weight

number of moles of Al = 2.7 / 27 = 0.1 moles

number of moles of Cl₂ = 3.12 / 71 = 0.044 moles

From the chemical reaction we see that 2 moles of Al are reacting with 3 moles of Cl₂ so 0.1 moles of Al are reacting with 0.15 moles of Cl₂ which is a quantity higher than our available one of 0.044 moles of Cl₂. The limiting reactant is Cl₂.

Learn more about:

limiting reactant

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