# Question #9d559

Jun 28, 2015

B) $\text{NO}$ is the only compound in the list. It is slightly soluble in water.

#### Explanation:

The other substances are elements.

A) ${\text{N}}_{2}$

The solubility of ${\text{N}}_{2}$ in water at 20 °C and 1 bar is approximately 20 mg/L.

B) $\text{NO}$

The solubility of $\text{NO}$ in water at 20 °C is about 56 mg/L.

C) ${\text{F}}_{2}$

${\text{F}}_{2}$ does not have a recorded solubility because it reacts explosively with water to form $\text{HF}$, ${\text{O}}_{2}$ and ${\text{O}}_{3}$.

$\text{2F"_2 + "2H"_2"O" → "O"_2+ "4HF}$
$\text{3F"_2+ "3H"_2"O" → "O"_3+ "6HF}$

D) $\text{Pb}$

Elementary lead does not dissolve in water.