Question

When $106$ grams of $N{a}_{2}C{O}_3$ is heated, the mass of $C{O}_2$ obtained is:

• A. $44$ grams
• B. $22$ grams
• C. $11$ grams
• D. $0$ grams

Answer 1

The correct option is A $44$ grams

Sodium carbonate does not decompose on heating. Hence, no carbon dioxide is evolved on heating. But if it decomposes on high temperature then $44$ g ($1$ mole) of carbon dioxide will be obtained from $106$ g ($1$ mole) of sodium carbonate.

$N{a}_{2}C{O}_3\left(s\right)⟶N{a}_{2}O\left(s\right)+C{O}_2\left(g\right)$