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Ch.4 - Chemical Quantities & Aqueous Reactions
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 4th EditionCh.4 - Chemical Quantities & Aqueous Reactions문제 44-
4장, 문제 44-

Iron(II) sulfide reacts with hydrochloric acid according to the reaction: FeS(s) + 2 HCl(aq) → FeCl2(s) + H2S(g) A reaction mixture initially contains 0.223 mol FeS and 0.652 mol HCl. Once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant remains?

검증된 단계별 안내
1
Identify the balanced chemical equation: FeS(s) + 2 HCl(aq) → FeCl_2(s) + H_2S(g).
Determine the stoichiometry of the reaction: 1 mole of FeS reacts with 2 moles of HCl.
Calculate the moles of HCl required to completely react with 0.223 mol of FeS using the stoichiometry from the balanced equation.
Compare the moles of HCl required with the moles of HCl available (0.652 mol) to determine the limiting reactant.
Subtract the moles of HCl that reacted from the initial moles of HCl to find the moles of excess HCl remaining.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

주요 개념

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

Stoichiometry

Stoichiometry is the calculation of reactants and products in chemical reactions based on the balanced chemical equation. It allows us to determine the proportions of substances consumed and produced, which is essential for identifying limiting and excess reactants in a reaction.
추천 영상:
가이드 코스
01:16
Stoichiometry Concept

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. Identifying the limiting reactant is crucial for calculating how much of the excess reactant remains after the reaction has occurred.
추천 영상:
가이드 코스
01:30
Limiting Reagent Concept

Excess Reactant

The excess reactant is the substance that remains after the reaction has gone to completion. By calculating the amount of the limiting reactant used, we can determine how much of the excess reactant is left over, which is important for understanding the efficiency of the reaction.
추천 영상:
가이드 코스
01:30
Limiting Reagent Concept
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교과서 질문

Iron(II) sulfide reacts with hydrochloric acid according to the reaction: FeS(s) + 2 HCl(aq) → FeCl2(s) + H2S(g) A reaction mixture initially contains 0.223 mol FeS and 0.652 mol HCl. Once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant remains?

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