Find the limiting reactant for each initial amount of reactants. 2 Na(s) + Br₂( g) → 2 NaBr(s) c. 1.5 mol Na, 2.1 mol Br₂

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Identify the balanced chemical equation: 2 \(\text{Na}\)(s) + \(\text{Br}\)_2(g) \(\rightarrow\) 2 \(\text{NaBr}\)(s).

Determine the mole ratio from the balanced equation: 2 moles of Na react with 1 mole of Br_2.

Calculate the moles of Na required to react with the given moles of Br_2: \(\text{Moles of Na required}\) = 2 \(\times\) \(\text{moles of Br}\)_2.

Compare the moles of Na required with the moles of Na available: If \(\text{moles of Na available}\) < \(\text{moles of Na required}\), then Na is the limiting reactant.

If \(\text{moles of Na available}\) > \(\text{moles of Na required}\), then Br_2 is the limiting reactant.

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주요 개념

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Limiting Reactant

The limiting reactant is the substance that is completely consumed first in a chemical reaction, thus determining the maximum amount of product that can be formed. It is essential to identify this reactant to predict the yield of the reaction accurately.

Stoichiometry

Stoichiometry involves the calculation of reactants and products in chemical reactions based on balanced chemical equations. It allows chemists to determine the proportions of each substance involved, which is crucial for identifying the limiting reactant.

Mole Ratio

The mole ratio is derived from the coefficients of a balanced chemical equation and indicates the relative amounts of reactants and products involved in the reaction. Understanding the mole ratio is vital for comparing the available amounts of reactants to determine which one limits the reaction.

Find the limiting reactant for each initial amount of reactants. 2 Na(s) + Br2( g) → 2 NaBr(s) c. 1.5 mol Na, 2.1 mol Br2