00:01
To calculate ksp, we first need to know the ksp expression.
00:05
The ksp expression comes from solid, barium hydroxide, dissociating to produce barium ion and two hydroxides.
00:18
So, ksp, which excludes solids, will simply be equal to the barium concentration, multiplied by the hydroxide concentration squared.
00:30
So, at equilibrium, they've given us, the barium concentration and the ph.
00:36
The ph can be used to calculate the hydroxide concentration.
00:40
The barium concentration is 0 .138 molar.
00:47
The hydroxide concentration is equal to kw, 1 .0 times 10 to the minus 14, divided by the hydronium concentration...