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Question
Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) How will she find the nature of the gas ?
(b) Write down word equations of all the reactions taking place in this process
(a) How will she find the nature of the gas ?
(b) Write down word equations of all the reactions taking place in this process
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Solution
(a)
- Transfer the collected gas to a solution of water.
- Now the solution should be tested with both red and blue litmus paper.
- Test the solution with blue litmus and red litmus.
- The blue litmus will change from blue to red.
Thus, the gas is acidic in nature.
(b)
- Charcoal when burned in the air, it forms carbon dioxide. The reaction is as follows:C(Charcoal )+O2(Oxygen)→CO2(Carbon dioxide)
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When water is added to the carbon dioxide gas then it forms carbonic acid that turns blue litmus paper into red. The reaction is as follows:
(CO2+ water →H2CO3(Carbonic acid)
- Transfer the collected gas to a solution of water.
- Now the solution should be tested with both red and blue litmus paper.
- Test the solution with blue litmus and red litmus.
- The blue litmus will change from blue to red.
(b)
- Charcoal when burned in the air, it forms carbon dioxide. The reaction is as follows:C(Charcoal )+O2(Oxygen)→CO2(Carbon dioxide)
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When water is added to the carbon dioxide gas then it forms carbonic acid that turns blue litmus paper into red. The reaction is as follows:
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