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Catalyst University
Buffers Henderson-Hasselbalch Equation Using Mass Balance Equation
Henderson-Hasselbalch Equation using mass balance equation for system of two equations with two unknowns
Why U
Algebra 31 - Calculating Mixtures of Solutions
This lecture shows how Algebra is used to solve problems involving mixtures of solutions of different concentrations.
FuseSchool
What Is Dynamic Equilibrium?
Learn about dynamic equilibrium, the conditions required for dynamic equilibrium to be reached and examples of systems at equilibrium.
Professor Dave Explains
Chemical Equilibria and Reaction Quotients
Many chemical reactions don't just go one way, they go forwards and backwards. Once there is balance between the two, this is an equilibrium. And we need to be able to predict how much stuff there will be at equilibrium! Get ready to...
Professor Dave Explains
Plant Responses to the Environment: Tropisms and Defenses
We've already learned a little bit about plant hormones, but let's dig a little deeper so that we can really examine the different ways that plants can respond to stimuli. These are called tropisms, and they can be positive or negative,...
Ancient Lights Media
The Biological Role of Osmosis
Osmosis Set: 3. This clip looks at some of the ways osmosis affects the lives of plants and animals.
Visual Learning Systems
Senses: Taste and Smell
Whether it is the sight of colorful flowers, or the smell of freshly baked cookies, our senses are constantly at work. Breathtaking video footage and three-dimensional animations illustrate how complex sensory organs function. Special...
JFR Science
Acid Strength: What Does pH Mean?
What makes one acid stronger than another? Pupils peruse the property of pH through a video from the JFR Science playlist. The narrator explains what is meant by a neutral pH, what that looks like from a chemical standpoint, and how...
JFR Science
Introduction to Rates of Reaction
Why are rates of reaction so important? Discover the answer to this, and many other questions, through a video from JFR Science. Pupils examine how, through the balanced chemical equation and experimentation, they can determine how fast...
JFR Science
Kc vs Qc: An Introduction to Equilibrium
Why are some reactions sort of like watching a tennis match? Introduce junior chemists to the basics of equilibrium using a video from JFR Science. Topics include why and how reactions shift from products back to reactants, factors that...
Fuse School
Concentration Formula and Calculations
Does a concentrated solution or a diluted solution contain more particles? The 24th video in a 30-part series answers this question as an introduction to figuring concentration using the standard formulas. Through two different formula...
Khan Academy
Khan Academy: Comparing Q vs K Example
See a worked example using reaction quotient Q to predict how concentrations will shift so the reaction can get to equilibrium. [5:53]
Khan Academy
Khan Academy: Le Chatelier's Principle: Worked Example
A worked example using Le Chatelier's principle to predict how concentrations will shift for different perturbations. Example includes changing reaction vessel volume, changing amount of solid product, adding inert gas, and adding a...
Khan Academy
Khan Academy: What Is an Equivalent?
Figure out how to calculate an equivalent and how it relates to a mole. Rishi is a pediatric infectious disease physician and works at Khan Academy. [10:18]