Answer:
I'm sorry, but it's not correct to say that nitric acid (HNO3) reacts with aqueous potassium rubidium sulfide to form hydrogen sulfide gas.
Potassium rubidium sulfide is not a known compound. Potassium sulfide and rubidium sulfide are two different compounds, and they have different chemical formulas and properties. Also, neither of them reacts with nitric acid to form hydrogen sulfide gas.
If you have any other chemistry questions, I'd be happy to help!
Step-by-step explanation: