Question

nitrous acid
express your answer as a chemical formula.
□a chemical reaction does not occur for this question.
part d
h₂co₃
spell out the full name of the compound.

Explanation:

Step1: Recall acid - naming rules

Nitrous acid is an oxo - acid. The general formula for nitrous acid is $HNO_2$.

Step2: Recall compound - naming rules for $H_2CO_3$

$H_2CO_3$ is an oxo - acid. The name of the polyatomic anion $CO_3^{2 - }$ is carbonate. When it is in acid form, the name is carbonic acid.

Answer:

For nitrous acid: $HNO_2$
For $H_2CO_3$: carbonic acid