相关实验视频

Updated: Jul 8, 2026

Chemical Gardens as Flow-through Reactors Simulating Natural Hydrothermal Systems
12:55

Chemical Gardens as Flow-through Reactors Simulating Natural Hydrothermal Systems

Published on: November 18, 2015

酸盐与化和水在南极平流层温度下的反应

M A Tolbert, M J Rossi, R Malhotra

    Science (New York, N.Y.)
    |November 27, 1987
    PubMed
    概括

    实验室实验表明,酸在极地平流层云层表面容易发生反应,产生消耗臭氧层的气体. 这些反应还形成酸,这可能会进一步加速南极洲的臭氧破坏.

    更多相关视频

    Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine08:16

    Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine

    Published on: March 13, 2017

    Simulation of Early Earth Hydrothermal Chimneys in a Thermal Gradient Environment06:29

    Simulation of Early Earth Hydrothermal Chimneys in a Thermal Gradient Environment

    Published on: February 27, 2021

    相关概念视频

    Precipitation Reactions03:10

    Precipitation Reactions

    In a precipitation reaction, aqueous solutions of soluble salts react to give an insoluble ionic compound – the precipitate. The reaction occurs when oppositely charged ions in solution overcome their attraction for water and bind to each other, forming a precipitate that separates out from the solution. Since such reactions involve the exchange of ions between ionic compounds in aqueous solution, they are also referred to as double displacement, double replacement, exchange reactions, or...
    Acids, Bases and Neutralization Reactions03:26

    Acids, Bases and Neutralization Reactions

    An acid-base reaction is one in which a hydrogen ion, H+, is transferred from one chemical species to another. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations within cells or lakes and oceans to the industrial-scale production of fertilizers, pharmaceuticals, and other substances essential to the society.
    Water: A Bronsted-Lowry Acid and Base02:30

    Water: A Bronsted-Lowry Acid and Base

    The reaction between a Brønsted-Lowry acid and water is called acid ionization. For example, when hydrogen fluoride dissolves in water and ionizes, protons are transferred from hydrogen fluoride molecules to water molecules, yielding hydronium ions and fluoride ions:
    Determining the pH of Salt Solutions04:08

    Determining the pH of Salt Solutions

    The pH of a salt solution is determined by its component anions and cations. Salts that contain pH-neutral anions and the hydronium ion-producing cations form a solution with a pH less than 7. For example, in ammonium nitrate (NH4NO3) solution, NO3− ions do not react with water whereas NH4+ ions produce the hydronium ions resulting in the acidic solution. In contrast, salts that contain pH-neutral cations and the hydroxide ion-producing anions form a solution with a pH greater than 7. For...
    Solubility03:00

    Solubility

    Solution, Solubility, and Solubility Equilibrium
    A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
    In a solution, the solute particles (molecules, atoms, and/or ions)...
    Acids, Bases and Neutralization Reactions01:27

    Acids, Bases and Neutralization Reactions

    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...