When 2gmof ferrous sulphate is heated in dry boiling tube
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Take about 2g of ferrous sulphate crystals in a dry boiling tube and note the colour of the crystals.
Hold the boiling tube with a test tube holder and heat the boiling tube over the flame of a burner.
Smell the gas being emitted.
Observe the colour of the crystals after heating.
To use the simulator:
You can select the type of reaction form ‘Select the type of reaction’ drop down list.
Thermal Decomposition
You can select the sample form ‘Select the sample’ drop down list.
To start the experiment, click on the ‘Start’ button.
To put copper carbonate into the test tube, drag the spatula over the test tube.
To turn on the burner, click on the knob of the burner.
To heat the contents of the test tube, drag the test tube over the burner.
Wait for some time to complete the reaction.
You can see the chemical equation of the corresponding reaction on the side menu.
You can see the inference by clicking on the inference icon.
Click on the ‘Reset’ button to redo the experiment.
Electrolytic Decomposition
You can select the sample form ‘Select the sample’ drop down list.
Adjust the resistance of the rheostat using the slider.
To start/stop the experiment, click on the ‘Switch On’ button.
You can see the chemical equation of the corresponding reaction on the side menu.
You can see the inference by clicking on the inference icon.
Click on the ‘Reset’ button to redo the experiment.
Photodecomposition
You can select the sample form ‘Select the sample’ drop down list.
Use the slider to select the power of light from the source.
Use the slider to select the distance of the source from the sample.
To start/stop the experiment, click on the ‘Start’ button.
You can see the chemical equation of the corresponding reaction on the side menu.
You can see the inference by clicking on the inference icon.
Click on the ‘Reset’ button to redo the experiment.
Note: Click on the ‘HELP’ button to see the instructions.
Observations:
The ferrous sulphate crystals are light green in colour.
The gas emitted has the characteristic odour of burning sulphur.
On heating, the colour changes from light green to white.
On further heating, the white substance changes to dark brown solid.
Inference:
Ferrous sulphate crystals contain water molecules (FeSO4. 7H2O). On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So their colour changes from light green
Hold the boiling tube with a test tube holder and heat the boiling tube over the flame of a burner.
Smell the gas being emitted.
Observe the colour of the crystals after heating.
To use the simulator:
You can select the type of reaction form ‘Select the type of reaction’ drop down list.
Thermal Decomposition
You can select the sample form ‘Select the sample’ drop down list.
To start the experiment, click on the ‘Start’ button.
To put copper carbonate into the test tube, drag the spatula over the test tube.
To turn on the burner, click on the knob of the burner.
To heat the contents of the test tube, drag the test tube over the burner.
Wait for some time to complete the reaction.
You can see the chemical equation of the corresponding reaction on the side menu.
You can see the inference by clicking on the inference icon.
Click on the ‘Reset’ button to redo the experiment.
Electrolytic Decomposition
You can select the sample form ‘Select the sample’ drop down list.
Adjust the resistance of the rheostat using the slider.
To start/stop the experiment, click on the ‘Switch On’ button.
You can see the chemical equation of the corresponding reaction on the side menu.
You can see the inference by clicking on the inference icon.
Click on the ‘Reset’ button to redo the experiment.
Photodecomposition
You can select the sample form ‘Select the sample’ drop down list.
Use the slider to select the power of light from the source.
Use the slider to select the distance of the source from the sample.
To start/stop the experiment, click on the ‘Start’ button.
You can see the chemical equation of the corresponding reaction on the side menu.
You can see the inference by clicking on the inference icon.
Click on the ‘Reset’ button to redo the experiment.
Note: Click on the ‘HELP’ button to see the instructions.
Observations:
The ferrous sulphate crystals are light green in colour.
The gas emitted has the characteristic odour of burning sulphur.
On heating, the colour changes from light green to white.
On further heating, the white substance changes to dark brown solid.
Inference:
Ferrous sulphate crystals contain water molecules (FeSO4. 7H2O). On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So their colour changes from light green
alplali48:
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Answer:
hey!!
Explanation:
Following two observations are observed when crystals of ferrous sulphate are heated: (1) Change in state and color takes place. (2) A gas is evolved during this process. Since, the compound (ferrous sulphate) decomposes into two or more substances therefore, it is a decomposition reaction
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