Ok, so you mix NaOH and H2CO3, and you get, which one, carbonate or bicarbonate? Or some of one and the other, maybe, with great excess of H2CO3, more bicarbonate than carbonate, is that it?
You will probably get mixture, unless you will mix exact ratio of acid and base.
I'm just trying to learn from Borek about the bi- prefix, and what it means.
Note: meaning of the prefix is of no practical importance, I believe it is just echo of some early chemistry. Imagine one of those early chemists not knowing anything that we take for granted today before we even touch the beaker. He finds out that mixing 4 mass units (be it grams, ounces or anything else) of sodium hydroxide with 10 mass units of sulfuric acid he gets solution that - once dried out - gives nice crystals and nothing is left - neither base nor acid. That's great! But now he does the same using 4 mass units of base and 20 mass units of the same acid - and he gets crystallic substance as well... And once again nothing is left! Oops, how do I tell which one is which one? Oh well, I have used twice the amount of sulfuric acid, it is doubled, let's call it BIsulfate...
Note2: NaOH and H2
just because I happen to remember their molar masses precisely enough
And it is not exactly 4:10, but close enough. And I am assuming pure sulfruic acid, not some solution. Don't be to picky and you should get the idea behind