citric acid solution- conduct an electic current?

[Ocean Breeze]

does citric acid in aqueous solution...conduct electricity?

[lada]

yes it does.
You can make elecric current go through a lemon by poking electrodes into the lemon.
It is cool.

[Ocean Breeze]

Thanks Lada.
Thats what I thought, but I cant get a globe to light up... better go change all the hardwear then.
Thanks again!

[ELIZABETH]

I've had (a bit) more success using an LED.
Liz

[lada]

You might not have enough current to light up a globe. Try a multimeter

[Lyn]

A Galvanometer works really well with lemons so it should work with citric acid solution. I just tell the teachers that the globes don't work with this prac (in fact have never worked with this prac) and provide them with the galvanometers instead.

Lyn.

[Jen1]

Yes, use an LED. They are very cheap and though they dont make much of a glow if the students wrap their hands around them and look inside they can see the glow. I find red ones are the best.

[Ocean Breeze]

yes, worked really well once i changed to a meter. No success with the LED though.

[Sandra Curry]

I have had luck with a couple of lemons in series and a digital stopwatch.