High School

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Which is the limiting reactant in the following reaction, given 42.0 g of CO₂ reacts with 99.9 g of KOH?

1) CO₂
2) KOH
3) K₂CO₃
4) H₂O

Answer :

Final Answer:

KOH is the limiting reactant in the given reaction.

Option 2) KOH is correct answer.

Explanation:

To determine the limiting reactant, we need to compare the amount of product that can be formed from each reactant.

1. Calculate the moles of each reactant:

- Moles of CO₂ = 42.0 g / molar mass of CO₂

- Moles of KOH = 99.9 g / molar mass of KOH

2. Determine the mole ratio between the reactants based on the balanced chemical equation.

3. Identify which reactant limits the formation of the product (in this case, K₂CO₃).

By comparing the moles of each reactant and considering the stoichiometry of the reaction, we find that KOH is the limiting reactant.

Option 2) KOH is correct answer.

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