Equilibrium

At 25 ℃, the concentration of H+ ions in 1.00 10-3 M aqueous solution of a weak monobasic acid having acid dissociation constant (Ka) of 4.00 10-11 is X 10-7 M. The value of X is . Use: Ionic product of water (Kw) = 1.00 10-14 at 25 ℃

The solubility of barium iodate in an aqueous solution prepared by mixing 200 mL of 0.010 M barium nitrate with 100 mL of 0.10 M sodium iodate is X 10-6 mol dm-3. The value of X is . Use: Solubility product constant (Ksp) of barium iodate = 1.58 10-9