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Chromium & Oxygen: Limiting Reactants & Chromium(III) Oxide Formation
Chapter 8, Problem 48P(choose chapter or problem)
For the reaction shown, find the limiting reactant for each of the initial quantities of reactants.
\(4 \mathrm{Cr}(s)+3 \mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{Cr}_{2} \mathrm{O}_{3}(s)\)
(a) \(1\mathrm{\ mol}\mathrm{\ Cr};1\mathrm{\ mol}\ O_2\)
(b) \(4\mathrm{\ mol\ }\mathrm{Cr};\ 2.5\mathrm{\ mol}\mathrm{\ O}_2\)
(c) \(12\mathrm{\ mol}\mathrm{\ Cr};\ 10\mathrm{\ mol}\mathrm{\ O}_2\)
(d) \(14.8\mathrm{\ mol}\mathrm{\ Cr};\ 10.3\mathrm{\ mol}\mathrm{\ O}_2\)
Questions & Answers
QUESTION:
For the reaction shown, find the limiting reactant for each of the initial quantities of reactants.
\(4 \mathrm{Cr}(s)+3 \mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{Cr}_{2} \mathrm{O}_{3}(s)\)
(a) \(1\mathrm{\ mol}\mathrm{\ Cr};1\mathrm{\ mol}\ O_2\)
(b) \(4\mathrm{\ mol\ }\mathrm{Cr};\ 2.5\mathrm{\ mol}\mathrm{\ O}_2\)
(c) \(12\mathrm{\ mol}\mathrm{\ Cr};\ 10\mathrm{\ mol}\mathrm{\ O}_2\)
(d) \(14.8\mathrm{\ mol}\mathrm{\ Cr};\ 10.3\mathrm{\ mol}\mathrm{\ O}_2\)
ANSWER:Step 1 of 5
Given chemical reaction,
\(4 \mathrm{Cr}(s)+3 \mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{Cr}_{2} \mathrm{O}_{3}(s)\)
The limiting reactant in a reaction is the reactant that produces the least amount of product. So we first calculate the amount of product \(\left(\mathrm{Cr}_{2} \mathrm{O}_{3}\right)\) that can be produced from each reactant to determine the limiting reactant.
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Chromium & Oxygen: Limiting Reactants & Chromium(III) Oxide Formation
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Unravel the reaction of chromium and oxygen forming chromium(III) oxide. Examine different scenarios to determine the limiting reactant using stoichiometric ratios. Understand how to predict product amounts through these calculations.