Kevan Mulvaney wrote:
got a problem- was able to set up the bottle with the tubing attached to a 60 ml syringe -can see the reation in the bottle but nothing happens in the syringe - waht am i not ding please?
It always helps us if you can provide the link to the instructions and as much detail as possible. With out knowing exactly what you are doing, I would guess that the volume of your setup is too large compared to the volume of gas made, so you don't have enough pressure to expand in to the syringe. A plastic bottle and plastic tubing can expand a little anyway, so if you are only making a small amount of gas, it wouldn't show up on the syringe. Also, all connections must be very tight, otherwise the excess gas will leak out.
You can either reduce the size of the system, or you could make more gas by using more tablets in the bottle. To check for leaks, you can put the whole system under water. You can either run with some tablets and see if you see bubbles in the water or slightly squeeze the bottle, and see if the air goes in to the water.
One last thing, you do have a hypothesis, right? What you've posted here is just a measurement. What question are you you trying to answer?