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Question

When sodium bicarbonate is heated strongly for calcined in a kiln, it form

A
$$Na$$
B
$$Na_2CO_3$$
C
$$NaHCO_3$$
D
$$H_2$$
Solution
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Correct option is B. $$Na_2CO_3$$

On heating sodium bicarbonate strongly it decomposes to give carbon dioxide, water vapour, and sodium carbonate.

Reaction :

$$\mathrm{2NaHCO_3(s) \rightarrow Na_2CO_3(s) + CO_2(g) + H_2O(g)}$$

Hence, Option "B" is the correct answer.

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