Chemistry - Environmental Chemistry Question with Solution | TestHub

The average residence time of $\mathrm{NO}$ is one month.

Limestone acts as a sink for ${\mathrm{SO}}_{\mathrm{x}}$

${\mathrm{SO}}_{\mathrm{x}}$ can be removed from flue gases by passing through a solution of citrate ions.

Ammonia acts as a sink for ${\mathrm{NO}}_{{\mathrm{x}}^{-}}$