Question

learning: molecular compounds - acids (binary & oxyacids)
question
what is the name for the acid with the formula hno₂?
answer
hydronitric acid
nitrous acid
hydronitrous acid
nitrate acid
nitric acid
i dont know yet

Explanation:

Oxy - acids with the polyatomic ion ending in - ite are named as - ous acids. The polyatomic ion in $HNO_2$ is nitrite ($NO_2^-$), so the acid is nitrous acid.

Answer:

B. Nitrous acid