Le Chatelier's Principle

$40.33
& Free Shipping over $99* Exclusions Apply
SKU: 212278
  • Study the prediction of the effect of temperature, pressure and concentration changes on chemical reactions.
  • Understand the principle that includes why a chemical system at equilibrium when stressed by external forces will adjust in such a way as to minimize that stress.
  • Kit includes experiment that is divided into three separate reactions demonstrating how different types of stress effect equilibrium.
Adding to cart… The item has been added

Details

Le Chatelier's Principle is a qualitative rule, which allows the prediction of the effect of temperature, pressure and concentration changes on chemical reactions. The principle states: A chemical system at equilibrium when stressed by external forces will adjust in such a way as to minimize that stress. For example when a system is subjected to increased pressure it adjusts so that it will occupy less volume. This offsets the pressure increase. If ice is placed under an increased pressure, it melts because the water obtained from a given mass of ice occupies less volume. In the formation of ammonia (the Haber process) from hydrogen and nitrogen, the product of the reaction (NH3) occupies less volume than the two uncombined gases. The increase in pressure favors the production of ammonia.

 

This experiment is divided into three separate reactions demonstrating how different types of stress effect equilibrium. Students are asked to predict the outcome of each situation and then prove or disprove their predictions.

 

Kit Includes:
1 X 25mL Bromothymol Blue pH Indicator Solution, 0.04%
1 X 10g Potassium Thiocyanate Crystal
1 X 25mL Ferric Nitrate Solution, 0.2M
1 X 200mL Potassium Thiocyanate Solution, 0.002M
1 X 10g Sodium Phosphate, dibasic
1 X 25mL Concentrated Hydrochloric Acid, 36%

2 X 25mL Sodium Hydroxide Solution, 0.1N
1 X 50g Sodium Chloride

 

DOT Info:
Small quantity exemption 173.4
THIS PACKAGE CONFORMS TO 49 CFR 173.4 for domestic highway or rail transport only

 

Specifications

You May Also Like

What Educators are Saying About Geyer

Justin has been nothing but helpful and professional in my requests for these Boeing Defense requirements. He has been able to answer my questions and concerns quickly, and helped in securing the order that I may have made with another supplier had be not been the value-add that he is to your company. I hope his merit raise this FY was "exceeds expectations".

Jesse C.

..I contacted Geyer via email. I had an email back within minutes!.. A back and forth via email sometimes takes days with other companies and customer service doesn’t happen like this very often. When it does, it’s much appreciated. Brett at Geyer was very polite and accommodating!

John C.

The customer service rep went as far as to reach out to the manufacturer of a product to answer my question, and then provided pictures. She really went above and beyond and answered the question thoroughly and gave me exactly the information I was looking for. This entire process was also extremely fast.

Robert C.

I called to ask how to submit a Tax Exempt Certificate for my library and spoke to a real person, no automation or asking me to press a number. He was friendly, helpful and got our Tax Exempt status established immediately.

Mischelle F.

...I don't think I've ever experienced that level of customer service before, and taking it into consideration along with the quality of their products, I would absolutely recommend Geyer to fellow teachers.

Robert S.

Trusted By

!