"Dave" <
wa4qal@...> writes:
> Thus, think of the design of the nozzle that blows air into the
> solution.
There's a row of small holes in the block attached to the air hose.
> I wonder if cooling the solution would help, since cooled solutions
> can usually absorb more air than warm solutions?
I heat my solution so it etches faster ;-)
> Would pressurizing the system help? If it could be taken up to a few
>atmospheres of pressure, would that help the Oxygen dissolve into the
>solution? (Don't blow up the container!)
It's not about dissolved oxygen, it's about converting the CuCl from the
brown form to the green form.