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The Backyard Scientist
Synthesis of Benzocaine. A ester of PABA and Ethanol.
Today im demonstrating the Synthesis of Benzocaine! <br/>
I used<br/> 150<br/>ml EtOH
15gm PABA
6ml Sulfuric acid
I used<br/> 150<br/>ml EtOH
15gm PABA
6ml Sulfuric acid
Professor Dave Explains
IIT/JEE Chemistry Practice #19: Molecular Properties
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
Recrystallization
Now that we have covered a variety of separation techniques, we know how to get an isolated product! But if it's a solid, it may contain impurities. Recrystallization is a common organic chemistry laboratory technique for the...
FuseSchool
Making Insoluble Salts
Learn the basics about how to make insoluble salts as a part of the overall acids and bases topic.
FuseSchool
Making Soluble Salts
Learn the basics about how to make soluble salts as part of the acids and bases topic.
Professor Dave Explains
Selective Precipitation
We know that insoluble compounds can form precipitates in solution when their constituent ions meet. But what if there are multiple possible precipitates? They actually may not all form at equivalent rates. We have to consult the Ksp...
Curated Video
The Role of Digestive Enzymes in Breaking Down Food Molecules
This video is about the role of digestive enzymes in the chemical breakdown of large, insoluble molecules in our food into smaller, soluble ones. The video focuses on the three main types of digestive enzymes - carbohydrase, protease,...
Professor Dave Explains
Temperature and Gas Solubility
We know about solutions and solubility, but we have typically examined solid or liquid solutes dissolved in a liquid solvent. Did you know that gases can also be dissolved in liquids? Their solubilities depend heavily on temperature, so...
msvgo
Compounds of Alkali Metals
This nugget explains the general characteristics of compounds of alkali metals such as oxides, hydroxides, halides and salts of oxoacids.
msvgo
Nitrogen Nutrition in Plants
It explains the need for intake of nitrogen in plants. It also describes methods of nitrogen nutrition such as biological nitrogen fixation, fertilisers and manures.
FuseSchool
What Are Salts?
Learn the basics about what salts are, as part of the overall topic of acids and bases.
Professor Dave Explains
Periodic Table Part 2: Alkali Metals (Li, Na, K, Rb, Cs, Fr)
It's time to check out Group 1 on the periodic table, the alkali metals. This includes lithium, sodium, potassium, rubidium, cesium, and francium. What can we say about their properties, reactivities, and applications? Let's find out!
Professor Dave Explains
Solubility Product Constant (Ksp)
We've learned that some ionic solids are totally water insoluble, but in fact this is a slight oversimplification. Even such solids will dissolve to some minuscule degree, and we can measure this, and do calculations with it. Let's learn...
Professor Dave Explains
Cell Communication: Hormones and Neurotransmitters
We already learned a little bit about receptors and the signaling pathways that they initiate, but what are the molecules the travel throughout your body, carrying messages like little carrier pigeons? They are called hormones and...
Curated Video
Separating Mixtures: Techniques and Methods
The video is about the various techniques used to separate different components of a mixture. The presenter discusses the differences between mixtures and compounds, and how mixtures are not chemically combined, but rather just mixed. He...
Curated Video
Preparation of Insoluble Salts: Using Solubility Rules and Filtration.
The video provides a detailed explanation of how to prepare a pure dry sample of an insoluble salt, specifically lead sulfate. The speaker first explains the solubility rules that determine whether a salt is soluble or not. Then, he goes...
FuseSchool
Digestion - What Is It?
This juicy burger has so many good things in it that my body needs. Protein and fats in the meat and cheese, carbohydrates in the bun, vitamins, minerals and fiber in the salad. But how can I use them? I need to get them into my.That's...
FuseSchool
Solubility Curves
Learn the basics about solubility curves as a part of the overall properties of matter topic.
Solubility curves are a graphical representation of the solubility of a certain salt over a temperatu
re range....
Solubility curves are a graphical representation of the solubility of a certain salt over a temperatu
re range....
Schooling Online
Chemistry Properties and Structure of Matter: Properties of Matter - Separation Techniques Part 4
Cookie the chef is a multitalented guy. He’s an amazing barista, too! He really takes filter coffee to the next level. Meanwhile, First Mate Phil needs a hand, or a hook, with fixing the ship’s hull. This lesson will explore separation...
Curated Video
Separating Mixtures: Physical Techniques and Methods
The video explains how to separate mixtures through physical processes without breaking any chemical bonds. The speaker describes various techniques such as filtration, crystallization, chromatography, and distillation, while explaining...
Professor Dave Explains
Complex Ion Formation
Most transition metal cations can do something interesting in solution, they can interact with specific ligands to form complex ions. These coordinate covalent bonds are new territory, so let's get a mini introduction to inorganic...
msvgo
Separation of a Solid-Solid Mixture
It explains separation of solid-solid mixture by using two methods, namely sublimation and evaporation.
Visual Learning Systems
Solutions at Work: What Are Solutions?
Upon viewing the Solutions at Work video series, students will be able to do the following: Explain that a solution is a type of mixture made of two or more substances that are evenly distributed. Provide an example of a common solution....
FuseSchool
What are the uses of Limestone?
In this video we give a detailed breakdown of Limestone and what the different uses of Limestone are.