A sample of saturated Ca(OH)2 solution in water is collected in flask #1, filtered into flask #2, then 25.00mL samples were transferred into flasks #3, #4, #5. Which flasks had to be dry and which could be wet?
Also, flask #2 was stoppered. Why?
The Attempt at a Solution
I think only flask #1 could be wet since it is the only flask that has unfiltered solution.
I think flask #2 was stoppered since it was filtered to prevent contamination, but would it affect Ksp if it wasn't stoppered?