Le Chatelier's Principle AP Kit

Le Chatelier's Principle AP Kit

Availability: In stock



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RETURNS NOT ACCEPTED: To ensure no contamination, we have a NO RETURN policy for this product. Absolutely NO RETURNS even if the box / container is unopened.


\r\nLe Chatelier's Principle states that a chemical system at equilibrium, when stressed by external forces, will adjust in such a way as to minimize the stress. This qualitative principle can be used to predict the effect of temperature, pressure, and concentration changes on chemical reactions. \r\n
\r\n    For example, a system subjected to increased pressure adjusts so that it will occupy less volume; this offsets the pressure increase. Ice melts when placed under increased pressure 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.\r\n
\r\n    The experiment in this kit is divided into three separate reactions that demonstrate how different types of stress effect equilibrium. Students are asked to predict the outcome of each situation, then prove or disprove their predictions. The small amount of chemicals makes for faster prep time, easier clean up, and fewer disposal worries. All experiments have been prepared and bench tested under the guidance of AP chemistry teachers. Lab includes chemicals, an instructional guide, the appropriate MSDS, and enough materials for fifteen set-ups. \r\nUPS Hazard Charge Applies Pricing includes a hazardous material shipping charge.\r\n

\r\n  Chemicals included:\r\n
\r\n    6    25 ml Hydrochloric Acid, 36% Soln\r\n

\r\n    2 ea    25 ml Bromothymol Blue, 0.04% Soln; 25 ml Ferric Nitrate, 0.2M Soln \r\n

\r\n    1    200 ml Sodium Hydroxide, 0.1N Soln \r\n

\r\n    2    200 ml Potassium Thiocyanate, 0.002M Soln \r\n

\r\n    1 ea    25 g Potassium Thiocyanate Crystals; 25 g Sodium Phosphate, Dibasic, Heptahydrate \r\n

\r\n    1    100 g Sodium Chloride Crystals \r\n

\r\nAll twenty-two AP Chemistry Kits are available individually, or as a complete set. See No.800000 for more information.\r\n\r\n


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