Please enable JavaScript.
Coggle requires JavaScript to display documents.
CHEMICAL TESTS ((CARBON DIOXIDE (When you do your experiment make sure…
CHEMICAL TESTS
CARBON DIOXIDE
When you do your experiment make sure that it is sealed and that there is a delivery tube coming off to catch any gas coming off. Get a beaker of limewater and submerge the end of the delivery tube. When gas is given off you will see bubbles in the limewater. If the limewater turns cloudy or milky then the gas is limewater.
Collect a sample of the gas produced in your experiment in a sealed test tube. Insert a lit splint and if the splint extinguishes then the gas is carbon dioxide
We conduct these tests to test for carbon dioxide because on an industrial level, large amounts of carbon dioxide will be produced and in large quantities it can suffocate people. Gas detection saves lives.
OXYGEN
Take a sample of the gas your reaction produced. Take a glowing splint and place it into a test tube of the gas you produced. If the splint re-lights then the gas is oxygen.
We conduct these tests to test for oxygen because on an industrial level, large amounts of oxygen will be produced. oxygen is very flammable and if there is a leak the whole building could explode.
AMMONIA
Take a sample of the gas you are testing and add damp litmus paper. It must be damp so the gas can dissolve. If the paper changes colour to blue from red.
Ammonia is very dangerous and ammonia in air causes immediate burning of the eyes, nose, throat and respiratory tract and can result in blindness, lung damage or death
HYDROGEN
Take a sample of the gas your reaction produced. Take a lit splint and place it into a test tube of the gas you produced. If there is a squeaky pop then the gas is hydrogen.
We conduct these tests to test for hydrogen because on an industrial level, large amounts of hydrogen will be produced. Hydrogen is very flammable and if there is a leak the whole building could explode.
ANION TESTS
SULFATES
To test for Sulfates add Hydrocloric acid to remove any carbonate or sulfite ions and then Barium Chloride solution. If there is white precipitate formed then it is Barium Sulfate and this means that there were sulfates in the original compound.
HALIDES
To test for halides first add nitric acid and then silver nitrate solution. From the colour of precipitate formed you can tell if halides were present and if so which ones.
-
-
-
CARBONATES
Add Hydrocloric acid to the substance you're testing and collect and test the gas given off. If the gas is CO2 then there are carbonates present
-
-
-
-
-
-
-
-
-
-
-
-
-