Final answer:
When sodium sulfide and silver nitrate are mixed in aqueous solution, they react to form insoluble silver sulfide and soluble sodium nitrate. Additionally, the formula for the ionic compound formed from sodium cation and sulfide anion is Na2S.
Step-by-step explanation:
The question asks whether sodium sulfide will mix with silver nitrate. When sodium sulfide (Na2S) and silver nitrate (AgNO3) are combined in an aqueous solution, they undergo a double displacement reaction, producing silver sulfide (Ag2S) and sodium nitrate (NaNO3). Silver sulfide is insoluble in water and will precipitate out of the solution as a black solid. This is similar to the reaction between sodium chloride and silver nitrate, which forms solid silver chloride.
To predict the formula of the ionic compound formed between the sodium cation (Na+) and the sulfide anion (S2-), we can simply combine the ions in a ratio that neutralizes their charges, resulting in Na2S for sodium sulfide.
Regarding the reaction of silver nitrate with potassium dichromate, it is stated that they form silver dichromate as a red solid. However, this is not directly relevant to the sodium sulfide and silver nitrate reaction.
It is important to remember that in a reaction, the total mass of reactants equals the total mass of products, a concept known as the law of conservation of mass. This holds true for the sodium sulfide and silver nitrate reaction, similar to the example given with silver nitrate and sodium chloride.