Qualitative Analysis Test

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Qualitative Analysis Testing on ions-
Cations and anions can be identified in various different ways and on different levels.
Many Qualitive analysis tests can be done to identify cations and anions through change of temperature and chemical reactions. The ‘Flame test’ is designed to identify a cation in a compound solution through changes of temperature, the cation can be identified by the color of the flame it produces. On the other hand, the ‘Precipitate test’ is designed to identify the anion in a compound solution this is done through the type of simple chemical reaction it produces.
Cations are positively charged ions, there is only one type of cation. Anions however have three different types, halide carbonate and sulfate. There is
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7- Once finished turn the Bunsen burner to a safety flame and turn off the gas

Materials- precipitates test
In this experiment you will need:
-Test tubes
-Test rack
-Unknown solution A
-Unknown solution B
-Silver Nitrate
-Safety goggles
-Barium chloride

Method- precipitates test
The method to this experiment is:
1- Gather your materials
2- Put on your safety goggles
3- Get unknown solution A and pour centimeter into a test tube
4- Add a centimeter of silver nitrate into unknown solution A
5- Observe the reaction and record your notes
6- Pour a centimeter of unknown solution B into another test tube
7- Add a centimeter of silver nitrate into unknown solution B
8- Observe the reaction and record your notes
9- Do the same with barium chloride and observe the reaction
10- Pour out the contents in the test tubes and wash them out
11- Pack up your materials

Results-Flame test
Cation Flame Test
A= Calcium Vibrant orange color with a hint of yellow
Calcium
B=Copper Forest green color with a hint of orange
Copper

Results- Precipitate Test-
Anion Halide Test (Silver Nitrate) Sulfate Test (Barium Chloride)
Unknown A Turned cloud white color, has a quick reaction, sediment on the top Clear solution with a white stringy bits floating
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Before this experiment was conducted I hypothesized for the flame test was if I increased the temperature on an unknown compound solution then the cation will be able to be identified by the color the flame. My hypothesis for the flame test was supported as I was able to identify the cation by the color the flame produced. My hypothesis for the precipitate test was if I use an unknown compound solution then the anion will be able to be identified by the type of chemical reaction it produces for the precipitate test. My hypothesis was supported for the precipitate test as I was able to identify the anion by the type of chemical reaction it produced. During the flame test, the cation was able to be identified by the color of the flame it produced from my previous tests results I was able to conclude that unknown solution A’s cation was calcium and unknown solution B’s cation was copper. During the precipitate test, halide, the anion wasn’t able to be identified but we do know that it is a halide ion. From previous results we can assume that unknown solution A’s anion is chloride and unknown solution B’s anion is sulphate. During the precipitate test, sulphate, the anion was able to be identified by the type of chemical reaction it produced from my previous results I can conclude that unknown solution A’s anion was calcium and unknown solution B’s anion was

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