What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)
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9 months ago
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8 months ago
To distinguish between AgNO3 (silver nitrate) and MnSO4 (manganese sulfate), you can use the following analysis scheme:
1. Step: Add dilute HCl (hydrochloric acid) to both solutions.
- AgNO3 + HCl → AgCl + HNO3 (silver chloride precipitates)
- MnSO4 + HCl → No reaction
2. Step: Observe if a precipitate is formed.
- AgNO3 forms a creamy white precipitate of AgCl.
- MnSO4 does not form any precipitate.
3. Step: Add aqueous ammonia (NH3) to the solutions.
- AgCl + NH3 → [Ag(NH3)2]+ + Cl- (silver chloride dissolves, forming a colorless complex)
- MnSO4 + NH3 → No reaction
4. Step: Observe any color changes.
- AgNO3 solution turns colorless after adding ammonia.
- MnSO4 solution remains unchanged.
By following this analysis scheme, you can differentiate between AgNO3 and MnSO4 based on the formation of a precipitate and the reaction with ammonia.
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7 months ago
To distinguish between AgNO3 (silver nitrate) and MnSO4 (manganese sulfate) using a reagent, you can follow an analysis scheme. The following steps will guide you through the process:
1. Step 1: Add sodium hydroxide (NaOH) solution to both AgNO3 and MnSO4 solutions separately.
AgNO3 + NaOH → AgOH + NaNO3
MnSO4 + 2NaOH → Mn(OH)2 + Na2SO4
Observations:
- AgNO3: The white precipitate of AgOH is formed.
- MnSO4: A light pink precipitate of Mn(OH)2 is formed.
2. Step 2: Add excess ammonia solution (NH3) to the obtained precipitates from Step 1.
AgOH + NH3 → [Ag(NH3)2]+ + OH-
Mn(OH)2 + 2NH3 → [Mn(NH3)2]2+ + 2OH-
Observations:
- Ag(NO3): The white precipitate of AgOH dissolves, forming a colorless solution due to the formation of [Ag(NH3)2]+ complex ion.
- MnSO4: The light pink precipitate of Mn(OH)2 does not dissolve, indicating no complex formation with NH3.
3. Step 3: Add diluted hydrochloric acid (HCl) solution to the solutions obtained after Step 2.
[Ag(NH3)2]+ + Cl- → AgCl + 2NH3
[Mn(NH3)2]2+ + 2Cl- → No reaction
Observations:
- Ag(NO3): The colorless solution turns milky white due to the formation of AgCl, a white precipitate.
- MnSO4: No visible reaction occurs.
Conclusion:
- AgNO3: Forms a white precipitate of AgOH when mixed with NaOH, dissolves in excess NH3 to form a colorless solution (complex ion [Ag(NH3)2]+), and precipitates again as AgCl when treated with HCl.
- MnSO4: Forms a light pink precipitate of Mn(OH)2 when mixed with NaOH, does not dissolve in excess NH3 (does not form a complex), and does not react with HCl.
By following these steps, you can distinguish between AgNO3 and MnSO4 using the reagents mentioned.