Question

1.) Assuming complete dissociation, what is the pH of a 3.51mg/L Ba(OH)2 solution?

**Is there a specific formula for this, please help!

2.) Enough of a monoprotic acid is dissolved in water to produce a0.0177 M solution. The pH of the resulting solution is 2.32.Calculate the Ka for the acid.

**For Ka I got .56 and then converting that into pK I got .252, butI don't believe this is right