Credit: RHYS LEWIS, AHS, DECD, UNISA/SCIENCE PHOTO LIBRARY

Caption: Variation in alcohol solubility. Animation showing molecular models of three alcohols of increasing molecular weight and their relative solubility in water. Alcohols are hydrocarbons with a hydroxyl (OH) group attached. Here, the atoms are colour-coded spheres: carbon (grey), hydrogen (white) and oxygen (red). These are primary alcohols, with the OH group on the end of a straight-chain unbranched alkane chain. The first alcohol to be highlighted (green flash) is ethanol (C2.H5.OH) which is miscible in water. The second alcohol to be highlighted is butanol (C4.H9.OH) with a solubility of 73 grams per litre of water. The third alcohol to be highlighted is hexanol (C6.H13.OH) with a solubility of 5.9 grams per litre of water. The trend for the primary alcohols is for solubility in water to decrease as size and molecular weight increases.

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Variation in alcohol solubility

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Duration: 00:00:20.01

Frame size: 1920x1080

Frame rate: 24

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 66.6M

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Capture format: QuickTime Animation

Codec: Animation

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