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関連する概念動画

Hydrogen Bonds01:04

Hydrogen Bonds

A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
Hydrogen Bonds00:26

Hydrogen Bonds

Hydrogen BondsHydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.Hydrogen Bonds Control the World!Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are...
Acid Strength and Molecular Structure03:05

Acid Strength and Molecular Structure

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 increasing...
Strong Acid and Base Solutions03:22

Strong Acid and Base Solutions

A strong acid is a compound that dissociates completely in an aqueous solution and produces a concentration of hydronium ions equal to the initial concentration of acid. For example, 0.20 M hydrobromic acid will dissociate completely in water and produces 0.20 M of hydronium ions and 0.20 M of bromide ions.
Mixtures of Acids01:19

Mixtures of Acids

The pH of a solution containing an acid can be determined using its acid dissociation constant and initial concentration. If a solution contains two different acids, then its pH can be determined using one of several methods depending on the relative strength of the acids and their dissociation constants.
In a strong and weak acid mixture, the strong acid dissociates completely and becomes a source of almost all the hydronium ions present in the solution. In contrast, the weak acid shows...
Mixtures of Acids03:27

Mixtures of Acids

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...

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関連する実験動画

Updated: Jul 12, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

塩酸水溶液における水素結合

S C Lee, R Kaplow

    Science (New York, N.Y.)
    |July 31, 1970
    PubMed
    まとめ

    X線 difraktionは塩酸水溶液中のイオンが水の構造を大幅に変化させることを明らかにします. 過剰な陽子は,酸の濃度が上昇するにつれて,水中の酸素から酸素までの距離を短くします.

    科学分野:

    • 物理化学 物理化学
    • 溶液化学について
    • 材料科学 材料科学とは

    背景:

    • 水溶液の構造を理解することは,多くの化学的および生物学的プロセスにとって極めて重要です.
    • 水中の水素結合ネットワークに対するイオンの影響は,重要な研究分野である.
    • 塩酸水溶液は,様々な産業および実験室の用途において不可欠です.

    研究 の 目的:

    • 水中の原子対の放射分布に塩酸の影響を調査する.
    • 水と酸の相互作用の変化を定量化するために,特に陽子溶解に関する.
    • 酸の濃度の変動が,水分子の局所構造にどのように影響するかを決定する.

    主な方法:

    • 原子対の放射分布関数を測定するために,X線微分法が用いられました.
    • 分析は,水溶液中の酸素-酸素原子のペア分布に焦点を当てた.
    • 実験データは,陽子濃度の変化と相関していた.

    主要な成果:

    • イオンの存在により,近隣の水の相関関係に重大な変化が観察されました.
    • 酸素から酸素までの新しい距離が特定され,過剰な陽子と直接関連していました.
    • これらの特定の酸素から酸素までの距離は,塩酸濃度が増加するにつれて減少することが判明しました.

    さらに関連する動画

    A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
    06:32

    A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

    Published on: August 17, 2016

    Hydrogen Charging of Aluminum using Friction in Water
    07:50

    Hydrogen Charging of Aluminum using Friction in Water

    Published on: January 28, 2020

    関連する実験動画

    Last Updated: Jul 12, 2026

    From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
    06:44

    From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

    Published on: March 24, 2018

    A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
    06:32

    A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

    Published on: August 17, 2016

    Hydrogen Charging of Aluminum using Friction in Water
    07:50

    Hydrogen Charging of Aluminum using Friction in Water

    Published on: January 28, 2020

    結論:

    • 塩酸中のイオン,特に過剰な陽子は,水の原生構造を深刻に破壊する.
    • 酸素から酸素までの距離の観測された縮小は,陽子の周りのよりコンパクトな局所的な水環境を示しています.
    • これらの発見は,酸性水溶液の構造に関する詳細な洞察を提供します.