CHEM PLZ HELP 2NaHCO3(s) → Na2CO3(s)+CO2(g)+H2O(ℓ)
If the chemical reaction above is occurring, we would likely observe...

Question 14 options:

Increase in CO2 (g) over time.

No NaHCO3 (s) will be left after a time.

Increase in NaHCO3 (s) over time.

Decrease in Na2 CO3 (s) over time.

Increase in CO2 (g) over time.

No NaHCO3 (s) will be left after a time

Explanation:

The reaction, shown below;

2NaHCO3(s) → Na2CO3(s)+CO2(g)+H2O(ℓ) is a decomposition reaction. A decomposition reaction is a kind of chemical reaction in which a given chemical specie breaks up to give other chemical species. Decomposition may be induced by heat or light.

Usually, there is only one reactant in a decomposition reaction; the specie that disintegrates into the products. This reactant usually decreases in concentration steadily because it is converted into products. This is why the mass of NaHCO3(s) in the system continues to decrease steadily until it finally falls to zero.

Conversely, the concentration (for aqueous) or volume (for gases) or mass (for solid) products of the reaction increases steadily as the reaction progresses. This explains why the volume of CO2 in the system will steadily increase over time.

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