00:02
There, in this question we have an element reacting with a compound.
00:10
So based upon this, an element reacting with a compound, the type of reaction that we're going to have is a single replacement.
00:23
In a single replacement, an element which is more reactive than the same type of element in the compound, and by type of element i mean metal, non -metal, so what happens if this is more reactive, then it's going to replace it.
00:41
So what we would get is a with y and then x.
00:46
And the way that we can tell if a is more reactive than x is by using the activity series.
00:56
Typically that is in table form, and you can just look in that the more active elements are at the top, and the less active elements are at the bottom of that table.
01:08
Okay, so for us here we have rubidium, which is a very active metal.
01:17
So it started off as a solid, and then we have water.
01:21
What i want to do is write h2o as actually hoh.
01:25
It's the same thing, i'm just writing it out a little bit.
01:29
And that is of course a liquid.
01:32
So what's going to happen here is the rubidium, which is more reactive on the activity series than hydrogen, is going to replace hydrogen.
01:42
So we will get rubidium with the hydroxide, making rubidium hydroxide, which is aqueous.
01:53
And our other product is going to be the hydrogen that has been displaced...