Ammonia gas, $\text{NH}_3$, combines with hydrogen sulfide gas, $\text{H}_2\text{S}$, to make the salt ammonium sulfide, $(\text{NH}_4)_2\text{S}$. When ammonium sulfide dissolves in water, an orange alkaline solution is produced. $(\text{NH}_4)_2\text{S}(aq) \rightleftharpoons \text{NH}_3(aq) + \text{NH}_4\text{SH}(aq)$ Adding $\text{NaOH}(aq)$ to this solution gives off a gas, $X$. Adding $\text{HCl}(aq)$ to a different portion of the solution produces a gas, $Y$. Which gases are $X$ and $Y$?
- A$X=\text{H}_2\text{S},\ Y=\text{H}_2\text{S}$
- B$X=\text{H}_2\text{S},\ Y=\text{NH}_3$
- C$X=\text{NH}_3,\ Y=\text{H}_2\text{S}$
- D$X=\text{NH}_3,\ Y=\text{NH}_3$