# Q10 (b). Saloni took a piece of burning charcoal and collected the gas evolved in a test tube. Write down word equations of all the reactions taking place in this process.

The reactions are as follows:

(i) Charcoal reacts with oxygen to form carbon dioxide gas.

$\\ \ \ C\ (s)\ \ \ \ \ \ \ + O_{2}\ (g) \ \ \ \rightarrow\ \ \ \ CO_{2}\ (g) \\Carbon\ \ \ \ \ \ Oxygen\ \ \ \ \ \ \ \ \ Carbon\ Dioxide \\\ _{from\ Charcoal}$

(ii) Carbon dioxide reacts with water to form carbonic acid, hence acidic in nature

$\\ CO_{2}\(g) \ \ \ \ \ \ \ \ \ \ \ + H_{2}O\ (l)\ \ \ \rightarrow\ \ \ H_{2}CO_{3}\(aq) \\ Carbon\ Dioxide\ \ \ \ Water\ \ \ \ \ \ \ Carbonic\ Acid$

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