Describe giving all practical details, how would you prepare by sodium hydrogen carbonate crystals.

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Solution

Sodium hydrogen carbonate crystals:

1.Dissolve 5 grams of anhydrous sodium carbonate in about 25 ml of distilled water in a flask.
2.Cool the solution y keeping the flask in a freezing mixture.
3.Pass carbon dioxide gas in the solution.
4.Crystals of sodium bicarbonate will precipitate out after sometime.
5.Filter the crystals and dry it in folds of filter paper.

Reaction :
$N a_{2} C O_{3} + C O_{2} + H_{2} O \to 2 N a H C O_{3}$

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