Asolution is prepared by diluting 43.5 ml of 6.5×10? 2m ba(oh)2 to a volume of 270.5 ml .

express the ph to two decimal places.

The pH of the solution is 12.31 .

Explanation:

Initial molarity of barium hydroxide =

Initial volume of barium hydroxide =

Final molarity of barium hydroxide =

Final volume of barium hydroxide =

1 mol of barium gives 2 mol of hydroxide ions.

Then 0.0104 M of barium hydroxide will give:

of hydroxide ions

The pH of the solution is 12.31 .