Spearmint and Caraway Oils: (+)- and (-)-Carvones

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Purpose: Learning the ability to tell the difference between (+)- and (-)-Carvones in multiple lab procedures. Also, the ability to read what substance “Caraway Oil or (+)-Carvones” is in limonene and spearmint. Procedure & Results: Part A: Analysis of the Carvones There are four different lab procedures in part A. In the first part of this lab, you will carefully smell the containers of spearmint, caraway oil, (+)-carvone, and (-)-carvone. Once you smell each substance, you will record what each substance smells like. When you smell the (+)-carvone, you will notice a woody type smell and with a little spice to it. When you smell the (-)-carvone, you will notice a sweet smell. Not only is it sweet, but it should have a vinegar like smell to it. When you smell caraway oil, you will get a moist wood type smell. When you smell the spearmint oil, you should smell a really strong minty smell. Not only is it really minty, but it has a slight smell of alcohol. In the second part of this lab, you will be using an analytical gas chromatography. The analytical gas chromatography will tell you the retention times of the components in your substance. Before you add any substance in the analytical gas chromatography, make sure you create a new report. To create a new report you will go under control and choose single run. Under Sample ID line, you will put the substance sample you are using to help indicate each report from each other. Once you're done with those steps, press submit. When the computer has finished processing your request, a blank chromatogram sheet will show up on the screen. You will do these steps after every report run. The first oil you will be testing is spearmint oil. You will use a micro liter syringe and measure out .5µL of spearmint oil. Make sure you don't have any bubbles in your micro liter syringe. After you have obtained .5µL of spearmint

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