You are given a solution containing an unknown salt.You perform a flame test and add AgNO3 to a small portion of the solution. Use your assigned observations to determine what salt is in your solution. Be sure to write the correct formula for the salt. The anion is either chloride or nitrate, so if no chloride is found, the anion must be nitrate. 1. The flame test color is pale green. A white precipitate forms when AgNO3 is added.
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URGENT:
Attached please see the results and the data tables needed.
1) Use your results and observations in Data Table 1 to create a flow chart for identification of unknown anions, using the AgNO3 and HCl confirmation tests. Insert the flow chart below.
2)Use your results and observations in Data Tables 1, 2, and 3, to create a flow chart for the identification of an unknown (both an unknown anion and cation), using the AgNO3 and HCl confirmation tests and the cation flame tests.
Thank you
Data Table 1. Anion Confirmation Tests.
Chemical | Anion | Addition of AgNO3 | Addition of HCl |
NaBr | Bromide | The solution became white and cloudy. | The solution remained white with its cloudy appearance. |
Na2CO3 | Carbonate | The inside is clear while the outside is cloudy. | The solution remained white and cloudy. Bubbles formed. |
NaCl | Chloride | The bottom of the solution turned a little cloudy while the top remained clear. | The solution remained white and cloudy on the bottom and clear on the top. |
NaI | Iodide | In the middle it is dark and cloudy. It fades out and around the middle is a lighter white. | The solution became a little separated. |
Na2SO4 | Sulfate | The solution is perfectly clear. | The solution turned into a white color and a little cloudy appearance. |
Na2S | Sulfide | It turns into a brownish color in the middle but separated from the clear. | The brown continues to become more separated from the clear. |
Unknown #103 | carbonate | White and a little cloudy. It contains small particles. | White and cloudy. Bubbles formed throughout the solution. |
Unknown #104 | sulfide | Brown color in the middle. The solution around it remained clear. | Some of the brown coloring disappeared and become separate. |
Data Table 2. Cation Flame Tests.
Chemical | Cation | Flame Observations |
KI | Potassium | Light pink |
CaCl2 | Calcium | Red |
LiOH | Lithium | Fuchsia pink |
NaCl | Sodium | Orange |
Cu(NO3)2 | Copper | Turquoise |
Unknown #105 | Copper | Turquoise |
Unknown #106 | Potassium | Light pink |
Unknown #107 | Calcium | Red |
Data Table 3. Complete Chemical Identification.
Chemical | Cation | Anion Test Observations | Anion | Complete Chemical Name and Formula |
Unknown #105 | Copper | With AgNO3 there is no change that can be observed. | CO32- | Copper(II) nitrate, Cu(NO3)2 |
Unknown #106 | Potassium | With AgNO3 the middle is a very dark color while the outside is white and cloudy. | I- | Potassium iodide, KI |
Unknown #107 | Calcium | With AgNO3 it turned into a white and cloudy solution. | Cl- | Calcium chloride,CaCl2 |
Data Table 1. Anion Confirmation Tests.
Chemical | Anion | Addition of AgNO3 | Addition of HCl |
NaBr | Bromide | It became white and cloudy | Still was white and cloudy |
Na2CO3 | Carbonate | Clear inside white and cloudy around the outside | Still white and cloudy but bubbles start to form |
NaCl | Chloride | Turn white cloudy on bottom clear on top | Still white cloudy on bottom clear on top |
NaI | Iodide | In the middle very dark and cloudy fades out lighter white around the middle | Became a little separate |
Na2SO4 | Sulfate | Clear | Became white and cloudy |
Na2S | Sulfide | Turn a brown color in the middle but separated from the clear | The brown becomes more separate from the clear |
Unknown #103 | CO3^2- | White and cloudy Small particles | Bubbles form white and cloudy |
Unknown #104 | S^2- | Turn brown color I the middle around clear | Some of the brown disappeared and become separate |
Data Table 2. Cation Flame Tests.
Chemical | Cation | Flame Observations |
KI | Potassium | LIGHT PINK |
CaCl2 | Calcium | RED |
LiOH | Lithium | FUSHA PINK |
NaCl | Sodium | ORANGE |
Cu(NO3)2 | Copper | TEAL |
Unknown #105 | Copper | TEAL |
Unknown #106 | Potassium | LIGHT PINK |
Unknown #107 | Calcium | RED |
Data Table 3. Complete Chemical Identification.
Chemical | Cation | Anion Test Observations | Anion | Complete Chemical Name and Formula |
Unknown #105 | Copper | with AgNO3: No chane | No3^2- | Copper(II) nitrate, Cu(NO3)2 |
Unknown #106 | Potassium | with AgNO3: In the middle very dark and cloudy fades out lighter white the middle | I- | Potassium iodide, KI |
Unknown #107 | Calcium | With AgNO3: Turn white cloudy on the bottom on top | Cl- | Calcium chloride, CaCl2 |
1. Use your results and observations in Data Tables 1, 2, and 3, to create a flow chart for the identification of an unknown (both an unknown anion and cation), using the AgNO3 and HCl confirmation tests and the cation flame tests.