00:02
Hi there, in this question we have sodium hydrogen carbonate, better known as baking soda, reacting with an acid.
00:10
And what we see here is actually a double displacement reaction where the two reactants are going to exchange ions.
00:19
So what we get is sodium, the positive ion from the first, combining with chloride, the negative ion from the second, and then we get the hydrogen from the hcl combining with the carbonate, giving us h2co3.
00:38
However that compound is very unstable.
00:43
So what happens is it decomposes.
00:47
Because so far we don't have a gas, and we know when we mix baking soda with an acid we get bubbling, showing that there's a gas.
00:54
But the sodium chloride is simply aqueous.
00:57
But when this decomposes, we get h2o, which would be a liquid of course, and we get carbon dioxide gas.
01:09
So we actually have three products here, because the h2co3 does not stick around very long...