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How to remove the insoluble CaSO4?

There is CaSO4 in the boiler wall, which is difficult to remove with acid. How to remove it?


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General Chemistry课程列表:

Chapter 1: The Foundations of Chemistry

-1.1 Basic Concepts

--Fundamentals of Chemistry

--1.1 Fundamentals of Chemistry

-1.2 Gases, Liquids and Solutions

--Gas,Liquid and Solution

--Saturated vapor pressure

--1.2 Gas,Liquid and Solution

-1.3 Errors and Significant Digits

-- Errors and Significant Digits

--1.3 Error and Significant Number

-Molecular mass determination

-Exercises for Chapter I

Chapter 2: Atomic Structure and the Periodic Properties of Elements

-2.1 The Law of the Motion of Microscopic Particles

--The movement law of microscopic particles

--The Movement Law of Microscopic Particles

-2.2 The Schrödinger Equations

--Schrödinger Equation

--Schrődinger Equation

-2.3 Radial Distribution Functions

--Radial Distribution Function

--Radial Distribution Functions

-2.4 Angular Distribution Functions

--Angular Distribution Fuctions

--Angular Distribution Function

-2.5 Factors Effecting Electron Energy

--Factors Effecting Electron Energy

--The Energy of an Electron in Atomic Orbitals

-2.6 The Periodic Properties of Elements

--The Periodic Properties of Element

--The periodic law of Elements

-Is the periodic table endless?

-Exercises for Chaper II

Chapter 3: Covalent Bond Theories

-3.1 Basic concepts of Chemical Bonds

-- Basic concepts of Chemical Bonds

--Basic concepts of chemical bonds

-3.2 Lewis’ Theories

-- Lewis theory

--LewisTheory

-3.3 Valence Bond Theories

--Valence Bond Theory

--Valence-Bond Theory

-3.4 Hybrid Orbital Theories

-- Hybrid Orbital Theories

--Hybrid Orbital Theory

-3.5 Valence Shell Electron Pair Repulsion Theories

--Valence Shell Electron Pair Repulsion Theory

--The VSEPR Theory

-3.6 Molecular Orbital Theories

--Molecular Orbital Theory

--Molecular Orbital Theory

-The differences between valence bond theory and molecular orbital theory

-Exercises for Chapter III

Chapter 4: Crystal Types and Intermolecular Forces

-4.1 Crystal Types

--Crystal Types

--Crystal type

-4.2 Molecular Crystal and Intermolecular Forces

--Molecular Crystal and Intermolecular Forces

--Molecular Crystal

-4.3 Ionic Crystal and Ionic Bonds

--Ionic Crystal and Ionic Bonds

--Ionic crystal and ionic bond

-4.4 Polarization of Ions

--Polarization of Ions

--Ion polarization

-4.5 Metallic Crystal and Metallic Bonds

--Metallic Crystal and Metallic Bonds

--Metallic bond and metallic crystal

-Is there pure ion bond or absolute covalent bond?

-Exercises for Chapter IV

Chapter 5: Preliminary Chemical Thermodynamics

-5.1 Basic concepts of Chemical Thermodynamics

--Basic concepts of Chemical Thermodynamics

--Basic concepts of Chemical Thermodynamics

-5.2 First Law of Thermodynamics

--First Law of Thermodynamics

--First Law of Thermodynamics

-5.3 Third Law of Thermodynamics

--Third Law of Thermodynamics

--Third Law of Thermodynamics

-5.4 Second Law of Thermodynamics

--Second Law of Thermodynamics

--Second Law of Thermodynamics

-It‘s too hot! Let‘s open the refrigerator!

-Exercises for Chapter V

Chapter 6: The Rates of Chemical Reactions

- 6.1 Chemical Reaction Rate and Expression

--Chemical Reaction Rate and Expression

--Chemical Reaction Rate and Expression

-6.2 Effects of External Conditions on Reaction Rate

--Effects of External Conditions on Reaction Rate

--Effects of External Conditions on Reaction Rate

-Exercises for Chapter VI

-Magic catalyst

Chapter 7: Chemical Equilibria

-7.1 Chemical Equilibrium Constant

--Chemical Equilibrium Constant

--Chemical Equilibrium Constant

-7.2 Shifting of Chemical Equilibrium

--Shifting of Chemical Equilibrium

--Shifting of Chemical Equilibrium

-Exercises for Chapter VII

-Left or right?

Chapter 8: Acids & Bases Equilibrium

-8.1 The Development of Acids & Bases Theories

--The Development of Acids & Bases Theories

--The Development of Acid-Base Theory

-8.2 Weak Acids & Bases Ionization Equilibria

--Weak Acids & Bases Ionization Equilibria

--Weak Acid and Weak Base Dissociation Balance

-Exercises for Chapter VIII

-Acidity of organic acid

Chapter 9: The Equilibrium of Precipitation

-Precipitation-Dissolution Equilibrium

-The Equilibrium of Precipitation

-Exercises for Chapter IX

-How to remove the insoluble CaSO4?

Chapter 10: Oxidation-Reduction Reactions

-10.1 Basic Concepts of Oxidation-Reduction Reactions

--Basic Concepts of Oxidation-Reduction Reactions

--Basic Concepts of Oxidation-Reduction Reactions

-10.2 Primary Cells and Electrode Potential

--Primary Cells and Electrode Potential

--Primary Cells and Electrode Potential

-10.3 Thermodynamics of Cell Reactions and the Factors Affecting Electrode Potential

--Thermodynamics of Cell Reactions and the Factors Affecting Electrode Potential

--Thermodynamics of Cell Reactions and the Factors Affecting Electrode Potential

-10.4 The Applications

--The Applications

--The Applications

-Who is afraid of whom?

-Exercises for Chapter X

Chapter 11: Coordination Compounds

-11.1 Basic Concepts of Coordination Compounds

--Basic Concepts of Coordination Compounds

--Basic Concepts of Coordination Compounds

--Basic Concepts of Coordination Compounds

-11.2 Stereochemistry of Coordination Compounds

--Stereochemistry of Coordination Compounds

--Stereochemistry of Coordination Compounds

--Steric Chemistry of Complex

-11.3 Bonding Theories of Coordination Compounds — Valence Bond Theories

--Bonding Theories of Coordination Compounds — Valence Bond Theories

--Bonding Theories of Coordination Compounds — Valence Bond Theories

--VB Theory

-11.4 Bonding Theories of Coordination Compounds — Crystal Field Theories

--Bonding Theories of Coordination Compounds — Crystal Field Theories

--Bonding Theories of Coordination Compounds — Crystal Field Theories

--Crystal-field theory

-11.5 Stability and Equilibrium Coordination Compounds

--Stability and Equilibrium Coordination Compounds

-- Stability and Equilibrium Coordination Compounds

--Complex Stability and Coordination Equlibrium

-Exercises for Chapter XI

-Molecular magnet

Chapter 12: Elemental Commonality

-12.1 The Origins of Elements

--The Origins of Elements

--The Origins of Elements

-12.2 The Main Group Elements — s-block

--The Main Group Elements — s-block

--The Main Group Elements — s-block

--s Block Elements

-12.3 The Main Group Elements — p-block

--The Main Group Elements — p-block

--The Main Group Elements — p-block

--p Block Elements

-12.4 The Transition Metal Elements — d-block and ds-block

--The Transition Metal Elements — d-block and ds-block

--The Transition Metal Elements — d-block and ds-block

--d Block Elements

-12.5 The Rare Earth Elements — f-block

--The Rare Earth Elements — f-block

--The Rare Earth Elements — f-block

--f Block Elements

-Exercises for Chapter XII

-The prominent element

How to remove the insoluble CaSO4?笔记与讨论

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