00:01
So for this problem, we have a series of chemical reactions, and we're supposed to turn them into chemical statements.
00:07
In other words, transfer these chemical equations and describe them via words.
00:14
The first reaction that we have is k plus h2o yields k -oh plus h2.
00:20
So k, that's just an element.
00:23
So we'll just call it potassium, because that's natural form.
00:28
So potassium.
00:30
And we know that h2o is water.
00:33
So potassium and water.
00:35
That's the beginning of our statement for the reactants.
00:37
Now we look at the products.
00:39
So these two reactants form.
00:42
The first product we have is k -o -h.
00:45
And so we know that we're dealing with an oh -minus ion, which is the hydroxide ion, and because the cat -ion is potassium, that is potassium hydroxide.
01:03
And then the last product we have is h -2, which is just hydrogen.
01:15
Part b, b -a -o -h -2 plus h -c -l yields b -a -cl -2 plus h -2.
01:22
So b -a -o -h -2.
01:24
So once again, we're dealing with the hydroxide group because of the oh -minus ion.
01:30
And we know that the cation is baryum, so it's just barium hydroxide.
01:40
The second reactant we have is h -c -l.
01:42
We know that this is an acid because there's an h and then some certain negative ion.
01:50
And in this case, that ion is minus cl.
01:53
So this is hydrochloric acid because there's no oxygen.
02:03
So that covers the reactants.
02:06
The first product that we have is bacl2.
02:10
So the ketion is barium, and the anion is a cl minus ion.
02:16
And so that is just chloride, because that's how i have to change the name for its ion.
02:21
So it's simply barium chloride.
02:31
And then the last product is just water.
02:34
H2o.
02:38
Part c.
02:40
Cu plus hno3 yield cunno32 plus no plus h2o.
02:45
So the first reactant that we have is just an element.
02:48
It's copper.
02:49
So that's what we would write...