Q1 Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) Design an activity to predict the nature of the gas formed in the test tube
(b) Write down word equations of all the reactions taking place in this process.
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Answers
Answer:
(a) Saloni should add some water in the test tube in which gas was collected. Shake the test tube and then bring a litmus paper near the test tube.The solution will turn litmus paper red. This shows that the gas is acidic.
(b)Charcoal contains carbon which on burning forms carbon dioxide gas.
C+O_2→CO_2C+O
2
→CO
2
The gas evolved is collected in a test tube and water is added to it.
CO_2+H_2O→H_2CO_3CO
2
+H
2
O→H
2
CO
3
Explanation:
(a) Saloni should add some water in the test tube in which gas was collected. Shake the test tube and then bring a litmus paper near the test tube.The solution will turn litmus paper red. This shows that the gas is acidic.
(b)Charcoal contains carbon which on burning forms carbon dioxide gas.
C+O_2→CO_2C+O
2
→CO
2
The gas evolved is collected in a test tube and water is added to it.
CO_2+H_2O→H_2CO_3CO
2
+H
2
O→H
2
CO
3