# When ammonium sulfate is heated with solution X, ammonia gas is given off. Is solution X HCl or NaOH?

Apr 29, 2017

Aqueous ammonia generates a BASIC solution...........and thus $X$ is likely $N a O H \left(a q\right)$...........

#### Explanation:

In solution, ammonia produces some quantity of ""^(-)OH ions according to the equilibrium:

NH_3(aq) + H_2O(l) rightleftharpoons NH_4^+ + ""^(-)OH $\left(i\right)$

Since aqueous ammonia is itself in equilibrium with gaseous ammonia, i.e.

$N {H}_{3} \left(a q\right) r i g h t \le f t h a r p \infty n s N {H}_{3} \left(g\right) \uparrow$ $\left(i i\right)$

it follows that the addition of base to an ammoniacal solution will drive the first equilibrium to the LEFT, and thus the SECOND equilibrium to the right as written.......This is a simple manifestation of Le Chatelier's principle.

I do not advize you to do this, but when you take the lid off a bottle of conc. ammonia, or common cleaning preparations (of which ammonia is of course a typical component), the pungent smell of ammonia will bring tears to your eyes. It is a very powerful, penetrating smell.