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Elemental S reacts with O2 to form SO3 according to the reaction: 2S+ 3O2--> 2SO3 a.) How many...

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Chemistry

Elemental S reacts with O2 to form SO3 according to thereaction:

2S+ 3O2--> 2SO3

a.) How many molecules are needed to react with 5.74g of S?Express your answer numerically in units of molecules.

b.) What is the theoretical yield of SO3 produced by 5.74 g ofS? Express your answer numerically in grams.

Next, consider a situation in which all of the S is consumedbefore all of the O2 reacts, or one in which you have excess Sbecause all of the O2 has been used up.

c.) For each of the given situations, indicate whether S or O2is the limiting reactant. Drag each item to the appropriatebin.

Bins: Limiting reactant is sulfur, and Limiting reactant isoxygen

Choices:

   - 3.0 mol sulfur, 4.0 mol of oxygen

   - 3.0 mol sulfur, 3.0 mol oxygen

   -3.0 mol sulfur, 5.0 mol oxygen

Answer & Explanation Solved by verified expert
4.3 Ratings (860 Votes)
2S 3O2 2SO3 mass of S used 574 g molar mass of S 3207 gmol mols of S reacted 574 g3207 gmol 017898 mols a mol ratio SO2 23 mols of O2 needed 32017898 mols 026847 mols 1 mol O2 6022 x1023 molecules of O2    See Answer
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