# Effervescence or Shaken All Over

**URL:** <https://boards.straightdope.com/t/effervescence-or-shaken-all-over/10158>\
**Category:** Factual Questions\
**Created:** [April 12, 2000, 1:09am UTC](https://boards.straightdope.com/t/effervescence-or-shaken-all-over/10158 "2000-04-12T01:09:00Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Rysdad](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@Rysdad](https://boards.straightdope.com/u/Rysdad)\
**Post date:** [April 12, 2000, 1:09am UTC](https://boards.straightdope.com/t/effervescence-or-shaken-all-over/10158/1 "2000-04-12T01:09:00Z")

</div>

I take a two-liter bottle of Pepsi, shake it up, and then open it.

Then I mop.

Why does it do that? What does shaking do that makes the carbon dioxide bust loose? What is it so loosely “bound” to that merely shaking the stuff up sets it free? I understand that it’s just sitting there in solution…but why doesn’t it stage a jail break (instead of just a little fizz) when I initially open a ‘calm’ bottle?

---

<div class="post-metadata">

**Author:** ![BigRoryG](https://avatars.discourse-cdn.com/v4/letter/b/f07891/32.png) [@BigRoryG](https://boards.straightdope.com/u/BigRoryG)\
**Post date:** [April 12, 2000, 1:59am UTC](https://boards.straightdope.com/t/effervescence-or-shaken-all-over/10158/2 "2000-04-12T01:59:00Z")

</div>

I’ve always wanted to do this:

[http://www.straightdope.com/columns/960614.html](http://www.straightdope.com/columns/960614.html)

Yay!!!

🙂

* * *

“My drinking team has a Rugby problem.”  
_This sig line has been brought to you by the creative mind of Wally_

If you need a graphic solution, [http:\ alk.to\Piglet](http://http:%5C%09alk.to%5CPiglet)

---

<div class="post-metadata">

**Author:** ![Rysdad](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@Rysdad](https://boards.straightdope.com/u/Rysdad)\
**Post date:** [April 12, 2000, 2:19am UTC](https://boards.straightdope.com/t/effervescence-or-shaken-all-over/10158/3 "2000-04-12T02:19:00Z")

</div>

Thanks, BRG.

Now I just have to figure out why the CO in the solution needs a microbubble to attach itself to for a moment before letting go of said bubble and then exiting through the top of the bottle.

But that’s another thread.