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Ch.19 - Electrochemistry
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 4th EditionCh.19 - Electrochemistry문제 83
19장, 문제 83

Determine the optimum mass ratio of Zn to MnO2 in an alkaline battery.

검증된 단계별 안내
1
Identify the chemical reactions involved in the operation of an alkaline battery, focusing on the reactions of zinc (Zn) and manganese dioxide (MnO2).
Write the balanced chemical equations for the oxidation of Zn and the reduction of MnO2 in the battery.
Calculate the molar masses of Zn and MnO2 using the periodic table to understand how much each substance weighs per mole.
Use stoichiometry from the balanced equations to determine the mole ratio of Zn to MnO2 required for the reactions to proceed completely without any excess reactant.
Convert the mole ratio into a mass ratio by multiplying the mole ratio by the molar masses of Zn and MnO2, respectively. This will give you the optimum mass ratio of Zn to MnO2 for the battery.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
10m

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. It involves using balanced chemical equations to determine the proportions of elements or compounds needed for a reaction. In the context of the Zn and MnO2 ratio, stoichiometry helps identify the optimal mass ratio based on their molar relationships in the battery's electrochemical reactions.
추천 영상:
가이드 코스
01:16
Stoichiometry Concept

Electrochemistry

Electrochemistry is the branch of chemistry that deals with the relationship between electrical energy and chemical changes. In alkaline batteries, the redox reactions between zinc and manganese dioxide generate electrical energy. Understanding the electrochemical processes is crucial for determining how the mass ratio affects the battery's efficiency and performance.
추천 영상:
가이드 코스
01:40
Faraday's Constant in Electrochemistry

Battery Chemistry

Battery chemistry refers to the study of the chemical reactions that occur within a battery to store and release energy. In alkaline batteries, zinc acts as the anode and MnO2 as the cathode. The optimum mass ratio of these materials is essential for maximizing energy output and ensuring the battery operates effectively over its lifespan.
추천 영상:
가이드 코스
00:58
Chemistry Gas Laws
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