Does carbonation cause straws to float in water?

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SUMMARY

The discussion centers on the phenomenon of straws floating in carbonated beverages, specifically Coca-Cola. Participants conclude that carbonation causes bubbles to attach to the straw, creating buoyancy through surface tension. When submerged in water, straws do not exhibit this behavior due to the absence of carbonation. The interaction between carbon dioxide bubbles and the straw is the primary factor influencing its movement within the liquid.

PREREQUISITES
  • Understanding of buoyancy principles
  • Basic knowledge of surface tension
  • Familiarity with carbonation and gas solubility in liquids
  • Concept of bubble dynamics in fluids
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  • Research the effects of surface tension on buoyancy in liquids
  • Explore the chemistry of carbonation in beverages
  • Investigate bubble dynamics and their impact on objects in fluids
  • Learn about the physical properties of gases dissolved in liquids
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This discussion is beneficial for physicists, chemists, beverage industry professionals, and anyone interested in the science of fluid dynamics and carbonation effects.

cragar
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So when i go to a restaurant and order a coke with no ice and the waitress brings it back with a straw in it the straw never stays in the glass. When i get it the straw is resting on the edge of the glass with the end barely in the coke, my guess is that it is held up with surface tension. But when I try to put the straw back in the glass normally it slowly starts to rise back up. But if the straw is just in water it will stay put at the bottom of the glass. So is it possible that some of the carbonation is bubbling up and hitting the straw making it go up?
 
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It's the bubbles attaching themselves to the side of the straw and growing.
 
thanks for your answer, That makes sense
 

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