1 / 5

Cool Blue Labettini

Dive into the fascinating world of chemiluminescence with the Cool Blue Labettini kit! This hands-on experiment guides you through measuring and combining Luminol, Perborate, and Copper Sulfate to create stunning visual reactions. Follow step-by-step instructions, observing reactions without stirring, and record your findings. Discover the nature of exothermic and endothermic reactions, and learn how Copper acts as a crucial catalyst in this exciting project. Perfect for science enthusiasts looking to uncover the science behind light-emitting reactions!

tadhg
Télécharger la présentation

Cool Blue Labettini

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cool Blue Labettini • • • • TRAYS: • “Cool Blue” kit — don’t eat anything • Water container & 10 ml graduated cylinder • Placemat • PREP 1: • Jot the following headings in your notebook … • OBSERVATIONS: • Luminol only — • 2. Luminol + Perborate — • 3. L + PB + Copper Sulfate —

  2. Cool Blue Labettini PREP 2: Measure 10 ml water and pour into cup Use “L” scoop to measure and HOLD one scoop of Luminol Use “PB” scoop to measure and HOLD one scoop of PerBorate Use last scoop to measure and HOLD about 1/2 scoop of copper sulfate

  3. Cool Blue Labettini EXPERIMENT • • • • • • DO NOT STIR DURING THE FOLLOWING STEPS Turn off lights. Add luminol to water & observe. Add perborate to water & observe. Turn lights on record your observations. Turn lights off. Add copper sulfate to water & observe — especially where the light is brightest! NOW swirl the contents of the cup and observe. Record your observations in your notebook.

  4. Cool Blue: Chemiluminescence Q: Is the reaction exothermic or endothermic? How do you know? BTW: The copper acts as a CATALYST — it doesn’t actually react with anything, but it makes the reaction go faster. HOW?

  5. Cool Blue: Chemiluminescence NH2 O O Sodium carbonate (base) Sodium perborate (oxidizer) H C C C C C C C C O- N + Na2CO3 (aq)+ 2 NaBO3 (aq) C C C C N O- NH2 H C C C C Luminol (5-amino 2,3-dihydrophthalazine 1,4 dione) O O N2 (g) + H2CO3 (aq) + 2 NaBO2 (aq) + 2 Na+ + …  Electrons get excited as bonds are broken, but settle down and emit light as bonds are made.

More Related