Question
Need help with the equation for data table 3. Also answers and explanation for question C & D
Questions
A.What was the identity of the anion in Unknown #103? Explain how you used the observations recorded in Data Table 1 to reach this conclusion.
B.What was the identity of the anion in Unknown #104? Explain how you used the observations recorded in Data Table 1 to reach this conclusion.
C.Write the chemical equation for ionic reaction between Na2S and AgNO3.
D.Write the chemical equation for ionic reaction between NaBr and AgNO3.
Anions, Cations, and Ionic Reactions Data Table 1. Anion Confirmation Tests Observations: Addition of Chemical Anion Observations: Addition of HC recipitate formed Carbonate small bubbles formed, precipitate slightly cleared No observed change Color shift to light lime Changed to pearl color No observed change Bromide Mil NaiCO3Carbonate muddy white precipitate Chloride pitate Sulfate Sulfide Bright vellow precipitate no observable reaction Dark brown precipitate UnknownCarbonate precipitate Bubbles Formed #103 UnknownSulfide Brown Precipitate No Noticeable Difference #104 Exercise 2: Qualitative Cation Tests- Flame Data Table 2. Cation Flame Tests Chemica KI Cation Potassium Calciunm Lithium Sodium Flame Observations substance liquified, flame turned white Vivid red/vellow flame Bright Pink Flame. Popping occurred Bright vellow flame ng occurs ul Melted into green liquid. Bright ellow flame Unknown #105 Unknown #106 Potassium Unknown #107 | Calcium Green vellow fame, charred the substance liquified, white flame red-to-vellow flame ef Data Table 3. Complete Chemical Identification. Complete Chemical Name and Formula Chemica Cation Anion Test Observations Anion Unknown Carbonate Bubbles formed Pearl colored ring to brown-gold overall Calcium Milky White precipitateBromide opper #105 UnknownPota ssiumprecipitate, then darkened Iodide #106 UnknownC #107
Explanation / Answer
Solution to Data table 3 :
Unknown 105 is cupric carbonate - CuCO3.
Unknown 106 is potassium iodide - KI
C - Na2S + AgNO3 - > NaNO3 + Ag2S
D - NaBr + AgNO3 - > NaNO3 + AgBr
unknown 107 is calcium bromide - CaBr2
