00:01
When we are talking about an acidic solution, an acidic solution has a hydronium ion concentration that is greater than 1 .0 times 10 to the negative 7, and a hydroxide concentration that is less than 1 .0 times 10 to the negative 7 molar.
00:26
The greater the hydronium concentration, the more acidic.
00:31
The smaller the hydroxide concentration, the more acidic.
00:36
The basic solution will be just the opposite where the hydrogen concentration will be less than 1 .0 times 10 to the negative 7 molar, and the hydroxide concentration will be greater than 1 .0 times 10 to the negative 7 molar.
00:55
So the solution that is most basic will have the smallest hydronium concentration and the greatest hydroxide concentration.
01:07
So if our four solutions are hydronium concentration 3 .2 times 10 to the negative 4, and then b, hydronium concentration, 0 .5 times 10 to the negative 3, and then hydroxide concentration 1 .5 times 10 to the negative 11.
01:44
We actually need to convert that.
01:46
We need to have all of them hydroxide or all of them hydronium so we can make sense out of which is most acidic, which is most basic, which has the highest ph, the lowest ph.
01:57
So let's convert this into hydronium where the hydronium concentration is kw, 1 .0 times 10 to the negative.
02:07
14 divided by the hydroxide concentration 1 .5 times 10 to the negative 11 and we get 6 .7 times 10 to the negative 4 and then for solution d where the hydroxide concentration is 3 .2 times 10 to the negative 12, the hydronium concentration will be 1 .0 times 10 to the negative 14, divided by 3 .2 times 10 to the negative 12 gives us 3 .1 times 10 to the negative 3 .1 times 10 to the negative 3 .3...