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12 Nov 2019

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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Nelly StrackeLv2

23 Mar 2019

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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.	CO₃^2-	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.

a flame test of a colorless solution gives a bright yellow color. When reacted with AgNO3 a white precipitate forms that dissolves when HNO3 is added. When HCl is added to the unknown solution, bubbles form. What is the compound in the colorless solution?

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