KCl, potassium chloride has a higher melting point compared to KClO 3 , potassium chlorate. This is due to Coulomb's Force Law. A small amount of sugar, a carbohydrate, reacts with an oxidizing agent to release a large amount of energy.
A balanced chemical equation represents what occurs during the reaction of sucrose with oxygen gas. Part I: Most silver salts are insoluble.
The nitrate and chlorate salts are exceptions, so the chloride ion will precipitate silver ion, whereas the chlorate ion will not. Part II: Gummi Bears are mainly sugar. Hot KCl s does not react with sugar. However, sugars and other organic compounds, are violently oxidized by the hot KClO 3.
The thermal decomposition of potassium chlorate produces potassium chloride and an excess of oxygen, which is sufficient to ignite the Gummi bear.
The heat produced continues to decompose the potassium chlorate resulting in a very rapid combustion reaction. Performance mechanics in front of an audience. Part 1. Part 2. Warning: The ethical ramifications of research on Gummi animals are very controversial. This scientist believes that Gummi research must continue as long as there is hope that Gummi research may lead to cures for human diseases such as GDS Gummi Deficiency Syndrome.
At the same time, every reasonable measure must be taken to ensure that Gummi suffering is kept to a minimum. Disposal: Allow test tube and reaction products to cool.
Soak in water and scrub to remove residue. Residues can be flushed down the drain with water. By continuing to view the descriptions of the demonstrations you have agreed to the following disclaimer. The university expressly disclaims all warranties, including the warranties of merchantability, fitness for a particular purpose and non-infringement. The university further disclaims all responsibility for any loss, injury, claim, liability, or damage of any kind resulting from, arising out or or any way related to a any errors in or omissions from this web site and the content, including but not limited to technical inaccuracies and typographical errors, or b your use of this web site and the information contained in this web site The university shall not be liable for any special, direct, indirect, incidental, or consequential damages of any kind whatsoever including, without limitation, attorney's fees in any way due to, resulting from, or arising in connection with the use of or inability to use the web site or the content.
The custom demos section of the website is used by UO chemistry instructors to schedule demonstrations that are not listed in the database. Do not proceed to schedule a custom demo unless you have already conferred with the lecture demonstrator about it. Contact: Randy Sullivan, smrandy uoregon.
Skip to main content. UO Home Dept Index. You are here Home ». What's In A Name? Part 1: Comparing KCl aq and aqeous potassium chlorate reactions with aqueous silver nitrate; Part 2: Comparing hot KCl vs potassium chlorate reaction with sugar "Gummi Bear". Curriculum Notes. Learning Objectives 1. Lead Time. One day of lead time is required for this project. Performance mechanics in front of an audience Part 1 Hold up a test tube of each substance and ask students to observe their physical appearance.
Pour one of the test tubes of each of the substances into the glass cylinders. Stir to dissolve. Add a dropperful of AgNO 3 solution into each of the cylinders. A precipitate forms in the cylinder containing the KCl. There is no visible reaction in the other. Part 2 Using the tongs, hold a test tube containing KCl in the burner flame for a minute or so.
This is because bleach has a shelf life and decomposes over time, eventually becoming salt water. Industrially, the Liebig process forms potassium chlorate by reacting chorine gas over hot calcium hydroxide to get calcium chlorate. Adding potassium chloride to get the calcium and potassium ions to switch partners:. Potassium chloride electrolysis also yields potassium chlorate.
Electrolysis of KCl in water forms chlorine at the anode, which reacts with potassium hydroxide KOH in the liquid. Potassium chlorate formed by the reaction precipitates out of solution.
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