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相关概念视频

Mixtures of Acids03:27

Mixtures of Acids

19.8K
The pH of a solution containing an acid can be determined using its acid dissociation constant and its initial concentration. If a solution contains two different acids, then its pH can be determined using one of several methods depending upon the relative strength of the acids and their dissociation constants.
A Mixture of a Strong Acid and a Weak Acid
In a mixture of a strong acid and a weak acid, the strong acid dissociates completely and becomes a source of almost all the hydronium ions...
19.8K
Acidity of Carboxylic Acids01:21

Acidity of Carboxylic Acids

7.3K
Carboxylic acids are the strongest organic acids. However, their acidic strength is much less than mineral acids like HCl. Carboxylic acids ionize in water and readily lose the hydroxyl proton to form a resonance-stabilized carboxylate ion.
7.3K
Acid Strength and Molecular Structure03:05

Acid Strength and Molecular Structure

31.0K
Binary Acids and Bases
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with...
31.0K
Polyprotic Acids03:38

Polyprotic Acids

29.3K
Acids are classified by the number of protons per molecule that they can give up in a reaction. Acids such as HCl, HNO3, and HCN that contain one ionizable hydrogen atom in each molecule are called monoprotic acids. Their reactions with water are:
29.3K
Acids, Bases and Neutralization Reactions01:27

Acids, Bases and Neutralization Reactions

6.9K
Acids and bases play several important roles in biology. The pH of a biological system can significantly impact the function of biological molecules, including enzymes, proteins, and nucleic acids. For example, enzymes have optimal pH ranges for their activity, and changes in pH can denature or alter their structure, affecting their function. Acids and bases also play a crucial role in cellular signaling and communication. The pH of the extracellular fluid around cells can influence the...
6.9K
Substituent Effects on Acidity of Carboxylic Acids01:31

Substituent Effects on Acidity of Carboxylic Acids

6.9K
The acidity of carboxylic acids is influenced by the nature of the substituents bounded to the functional group. The acid strength is determined by the stability of the carboxylate anion—the conjugate base formed by dissociating the corresponding carboxylic acid.
6.9K

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相关实验视频

Updated: Jul 27, 2025

Establishment of an Extracellular Acidic pH Culture System
09:41

Establishment of an Extracellular Acidic pH Culture System

Published on: November 19, 2017

14.8K

酸性COO是指酸性COO.

Ting Zhang1, Jinlei Zhou1, Ting Luo1

  • 1Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004, China.

Chemistry (Weinheim an der Bergstrasse, Germany)
|June 7, 2023
PubMed
概括
此摘要是机器生成的。

在酸性介质中的电化学二氧化碳减排避免了碳酸盐问题,但在演化反应方面面临挑战. 本综述探讨了抑制进化的策略,并加强用于可持续燃料生产的二氧化碳转化.

关键词:
(二) 碳酸盐交叉车型酸性电解质是一种酸性电解质.二氧化碳的电还原 CO2 的电还原.竞争激烈的 HER HER 在竞争中.微环境监管法规 微环境监管

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Determination of the Gas-phase Acidities of Oligopeptides
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Real-Time, Semi-Automated Fluorescent Measurement of the Airway Surface Liquid pH of Primary Human Airway Epithelial Cells
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相关实验视频

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Establishment of an Extracellular Acidic pH Culture System
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Determination of the Gas-phase Acidities of Oligopeptides
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Determination of the Gas-phase Acidities of Oligopeptides

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Real-Time, Semi-Automated Fluorescent Measurement of the Airway Surface Liquid pH of Primary Human Airway Epithelial Cells
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科学领域:

  • 电化学 电化学 电化学
  • 催化剂是一种催化剂.
  • 可持续能源 可持续能源

背景情况:

  • 电化学二氧化碳减排 (CO2 RR) 对于可持续的燃料生产和碳中和性至关重要.
  • 中性和性电解质遭受碳酸盐形成和交叉,降低效率.
  • 酸性电解质减轻碳酸盐问题,但面临来自演化反应 (HER) 的竞争.

研究的目的:

  • 审查最近在酸性二氧化碳电解方面的进展.
  • 讨论在酸性CO2中抑制HER的限制和策略 RR.
  • 为改善酸性介质中二氧化碳转化效率提供视角.

主要方法:

  • 总结最近在酸性二氧化碳电解方面的进展.
  • 分析限制酸性电解质应用的关键因素.
  • 讨论策略:电解质微环境调制,阴离子调整,表面功能化,纳米封闭和新型电解剂设计.

主要成果:

  • 酸性电解质有效地解决碳酸盐形成和交叉问题.
  • 演化反应 (HER) 仍然是一个重大挑战,降低了二氧化碳转化效率.
  • 各种策略在抑制HER和增强酸性CO2 RR方面表现有前途.

结论:

  • 克服 HER 的竞争对于高效的酸性 CO2 电解至关重要.
  • 像微环境控制和纳米封闭等先进的战略提供了解决方案.
  • 需要进一步的研究才能充分发挥酸性CO2RR在可持续燃料生产中的潜力.