- #1
Mantaray
- 17
- 0
What would be the best way to find the surface tension of a water-based solution with an experiment without using any expensive/specialist equipment?
I thought that using the capillary rise method would be a pretty good idea as it isn't too hard to measure the variables needed to calculate the surface tension. Height and density are all quite easily measured. The contact angle is a bit harder though, or can I assume that the contact angle for this solution with a glass capillary will be 0 degrees (total wetting)?
Or I could build a balance and then measure the momentum required to lift a thin metal ring from the solution's surface. This probably isn't a really viable idea though, as the force required to lift the ring would be in the order of magnitude of mN or even smaller.
What would be a better option?
I thought that using the capillary rise method would be a pretty good idea as it isn't too hard to measure the variables needed to calculate the surface tension. Height and density are all quite easily measured. The contact angle is a bit harder though, or can I assume that the contact angle for this solution with a glass capillary will be 0 degrees (total wetting)?
Or I could build a balance and then measure the momentum required to lift a thin metal ring from the solution's surface. This probably isn't a really viable idea though, as the force required to lift the ring would be in the order of magnitude of mN or even smaller.
What would be a better option?