|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/acids-bases-and-salts/
课程评论：没有评论
本课程“酸、碱和盐”旨在探讨我们周围存在的各种物质的本质。课程将深入讲解酸和碱的分类及其性质，特别是它们与食物味道的关系（酸味源于酸，苦味源于碱）。 课程将重点介绍酸的两大分类： 1. **按来源分类**： * **无机酸（矿物酸）**：通常从矿物质中提取的酸。课程会提及一种特殊的无机酸混合物——王水，它能够溶解金、铂等贵金属。 * **有机酸**：通常从植物和动物中提取的酸。 2. **按碱基度分类**： * **碱基度**：定义为一次分子在水溶液中完全电离时，可以产生的可 H 原子的数量，或者说一个酸分子电离时产生的 H₃O⁺/H⁺(aq) 的数量。 * **一元酸**：指完全电离时，一个分子只能产生一个水合氢离子（H₃O⁺）的酸。 本课程将为学习者提供关于酸、碱和盐的基础知识，以及它们在日常生活中的体现。
A wide variety of material consists essentially of elements and compounds having different characteristics exist around us. Some of them are sour, some are bitter, while some are salty in taste.For Example - Sour and bitter tastes of food are due to acids and bases, respectively, present in them.Acids react with bases to produce salt whose properties are different from acid and base.CLASSIFICATION OF ACIDS -(i) On the basis of their source acids are of two type -(i) Mineral acids ; (ii) Organic acids(i) Mineral Acids (Inorganic acids):- The acids which are usually obtained from minerals are known as inorganic acids.Note: Aqua regia is a mixture of (3 part HCl & part HNO3) which dissolves even noble metals like Au, Pt.(ii) Organic Acids:- The acids which are usually obtained from plants and animals are known as organic acids. (II) On the Basis of their Basicity:-"The basicity of an acid is the number of replaceable hydrogen atoms present in a molecule that can be produced by the complete ionization of one molecule of that acid in aqueous solution."Or"Basicity of an acid is determined by number of hydronium ions (H3O+/H+(aq) produced per molecule of an acid in ionization."(i) Monobasic Acids:- The acid on complete ionization produce one hydronium ion in aqueous solution.
