00:01
In this question we're asked to balance a reaction between an alkali metal or a group one metal, the rubidium oxide here, and its compound with that of water.
00:12
So the reason i mention the fact that this is an alkali metal is when you think of alkaline solutions, think of solutions that have bases in them.
00:24
And hopefully when you think of bases, you think of hydroxide ion.
00:29
So we can already sort of start predicting the product of this reaction.
00:34
We're going to have hydroxide ions in it.
00:37
And what are those hydroxide ions going to couple with? the rubidium cation.
00:41
So when this goes to react, we're going to end up getting rubidium hydroxide as a product of this reaction.
00:51
And so when we look at a final step of balancing this reaction then, we want to look at the fact that we have two rubidiums on the reactant side, but only one on the product side...