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Propane:

Boiling Points- Concept

JoVE 11192

Boiling Point Determination


Similar to the melting point, the boiling point is a physical property. If the sample is a pure compound, then the boiling point can be used to determine the identity of the compound. Ultimately, experimentally determining the exact boiling point is challenging. Like melting points, experimental boiling points are given as a range and…

 Lab: Chemistry

The Effect of Reflux Ratio on Tray Distillation Efficiency

JoVE 10432

Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA


Tray and packed columns are both commonly used for distillation, absorption, and stripping separation operations.1,2 The goal of this experiment is to distill a mixture of alcohols (methanol, isopropanol) and water …

 Chemical Engineering

Efficiency of Liquid-liquid Extraction

JoVE 10426

Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA


Liquid-liquid extraction (LLE) is a separation technique used instead of distillation when either: (a) the relative volatilities of the compounds to be separated are very similar; (b) one or more of the mixture…

 Chemical Engineering

Vapor-liquid Equilibrium

JoVE 10425

Source: Michael G. Benton and Kerry M. Dooley, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA


Vapor-liquid equilibrium is paramount in engineering applications such as distillation, environmental modeling, and general process design. Understanding the interactions of components in a mixture is very…

 Chemical Engineering

Guidelines in Case of an Laboratory Emergency

JoVE 10379

Robert M. Rioux & Zhifeng Chen, Pennsylvania State University, University Park, PA


The most common laboratory emergencies include chemical spills, fire or explosion, electric shock, and personnel injuries. Most laboratory accidents occur due to poor planning or lack of attention. Therefore, it's always better to prevent accidents…

 Lab Safety

Working with Hot and Cold Sources

JoVE 10366

Source: Robert M. Rioux & Suprita Jharimune, Pennsylvania State University, University Park, PA


Working with extreme temperatures, both high and low, is an integral part of many laboratory operations. For many, mentioning a laboratory instantly evokes the mental picture of a Bunsen burner. Bunsen burners and hot plates are used…

 Lab Safety

Ideal Gas Law

JoVE 5537

Source: Laboratory of Dr. Andreas Züttel - Swiss Federal Laboratories for Materials Science and Technology


The ideal gas law describes the behavior of most common gases at near-ambient conditions and the tendency of all chemical matter in the dilute limit. It is a fundamental relationship between three measurable macroscopic system…

 General Chemistry
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