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Electric current is found when Menthos is put in Coca cola

by thinh123
Tags: coca, cola, current, electric, menthos
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thinh123
#1
Feb27-12, 12:33 AM
P: 1
Few years ago, we have known about the phenomenon that Coca cola is overflow severely when a piece of Menthos candy is put inside.

I replicate this experiment, with a multimeter is used to measure the current. With my surprise, the needle vibrates to show that an electric current is generated.

Could anyone repeat my experiment to find out that if I am wrong or not

Thank you
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willem2
#2
Feb27-12, 12:52 AM
P: 1,396
Quote Quote by thinh123 View Post
Few years ago, we have known about the phenomenon that Coca cola is overflow severely when a piece of Menthos candy is put inside.

I replicate this experiment, with a multimeter is used to measure the current. With my surprise, the needle vibrates to show that an electric current is generated.

Could anyone repeat my experiment to find out that if I am wrong or not

Thank you
I think a somewhat better description of what you did is needed. Where did you put the probes, what is the material of the probes, what is the range of the multimeter, etc.
NascentOxygen
#3
Feb27-12, 02:05 AM
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P: 5,328
Your observation is not unsurprising. Coke is acidic so will react with metal immersed in it. You expect to see a potential difference between immersed electrodes if there is a concentration difference in the electrolyte. The menthos reaction is unevenly distributed in the bottle, and as the reaction proceeds it causes a fluctuating difference in electrolyte concentrations near the electrodes.

When the reaction has ceased, does the current also appear to cease?

NascentOxygen
#4
Feb28-12, 03:02 AM
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P: 5,328
Electric current is found when Menthos is put in Coca cola

Quote Quote by NascentOxygen View Post
Your observation is not unsurprising.
Correcting my own post.


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