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Ch.3 - Chemical Reactions and Reaction Stoichiometry
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 14th EditionCh.3 - Chemical Reactions and Reaction Stoichiometry문제 105c3
3장, 문제 105c3

When a mixture of 10.0 g of acetylene (C2H2) and 10.0 g of oxygen (O2) is ignited, the resulting combustion reaction produces CO2 and H2O. (c) How many grams of CO2 and H2O are present after the reaction is complete?

검증된 단계별 안내
1
Determine the molar mass of acetylene (C2H2) and oxygen (O2).
Calculate the moles of acetylene and oxygen initially present using their respective molar masses.
Write the balanced chemical equation for the combustion of acetylene: 2 C2H2 + 5 O2 ightarrow 4 CO2 + 2 H2O.
Using stoichiometry, determine the limiting reactant by comparing the mole ratio from the balanced equation with the moles of each reactant calculated.
Calculate the moles of CO2 produced based on the moles of the limiting reactant, then convert these moles of CO2 to grams using the molar mass of CO2.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Stoichiometry

Stoichiometry is the branch of chemistry that deals with the quantitative relationships between the reactants and products in a chemical reaction. It allows us to calculate the amounts of substances consumed and produced in a reaction based on balanced chemical equations. In this case, understanding the stoichiometric ratios of acetylene and oxygen will help determine how much carbon dioxide is produced.
추천 영상:
가이드 코스
01:16
Stoichiometry Concept

Combustion Reactions

Combustion reactions are exothermic reactions that occur when a substance reacts with oxygen, producing heat and light. In the case of acetylene (C2H2), it combusts in the presence of oxygen to form carbon dioxide (CO2) and water (H2O). Recognizing the products of the combustion of acetylene is essential for calculating the mass of CO2 produced.
추천 영상:
가이드 코스
02:24
Combustion Apparatus

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is crucial for converting between grams of a substance and moles, which are used in stoichiometric calculations. For this problem, knowing the molar masses of acetylene, oxygen, carbon dioxide, and water will facilitate the conversion of the initial masses into moles, allowing for the determination of the final mass of CO2 produced.
추천 영상:
가이드 코스
02:11
Molar Mass Concept
관련 실천
교과서 질문

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교과서 질문

When a mixture of 10.0 g of acetylene (C2H2) and 10.0 g of oxygen (O2) is ignited, the resulting combustion reaction produces CO2 and H2O. (c) How many grams of C2H2 are present after the reaction is complete?

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교과서 질문

A mixture containing KClO3, K2CO3, KHCO3, and KCl was heated, producing CO2, O2, and H2O gases according to the following equations: 2 KClO31s2¡2 KCl1s2 + 3 O21g2 2 KHCO31s2¡K2O1s2 + H2O1g2 + 2 CO21g2 K2CO31s2¡K2O1s2 + CO21g2 The KCl does not react under the conditions of the reaction. If 100.0 g of the mixture produces 1.80 g of H2O, 13.20 g of CO2, and 4.00 g of O2, what was the composition of the original mixture? (Assume complete decomposition of the mixture.) How many grams of K2CO3 were in the original mixture?

1325
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