Chapter 14 - Acids and Bases - Questions for Review and Thought - Topical Questions - Page 652c: 49f

$H_2CO_3$ is a weak oxoacid.

To predict if an oxoacid is strong or weak, normally, we just need to calculate the difference between the number of oxygens, and the number of hydrogens: $H_2CO_3$: 2 "H" and 3 "O" - If that difference is $\geq 2$, this is probably a strong acid, otherwise, it is weak. 3 - 2 = 1 1 $\geq 2$ False Therefore, $H_2CO_3$ is a weak oxoacid.