CHEMISTRY
posted by KRIS .
WHAT IS THE PH OF 0.50 M HC10? KA OF HC10 IS 3.5X108

That can't be HC_{10}. It must be hypochlorous acid.
..............HClO ==> H^+ + ClO^
I.............0.50......0......0
C..............x.......x.......x
E............0.50x.....x.......x
Substitute into the Ka expression for HClO and solve for x = (H^+) and convert to pH.
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