In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.

Reaction Description:
In this reaction, sodium carbonate reacts with ethanoic acid to produce sodium ethanoate, carbon dioxide, and water.

The equation can be represented as follows:
Na2CO3 + 2CH3COOH → 2 CH3COONa + CO2 + H2O

Given Information:
– Mass of sodium carbonate (Na2CO3) = 5.3g
– Mass of ethanoic acid (CH3COOH) = 6g
– Mass of sodium ethanoate (CH3COONa) = 8.2g
– Mass of carbon dioxide (CO2) = 2.2g
– Mass of water (H2O) = 0.9g

Analysis:
1. Total Mass before the Reaction:
– Mass of sodium carbonate + Mass of ethanoic acid = 5.3g + 6g = 11.3g

2. Total Mass after the Reaction:
– Mass of sodium ethanoate + Mass of carbon dioxide + Mass of water = 8.2g + 2.2g + 0.9g = 11.3g

Conclusion:
The total mass before the reaction matches the total mass after the reaction, both equaling 11.3 grams. This observation aligns perfectly with the law of conservation of mass.

Explanation:
– Conservation of Mass Principle: This law states that in any chemical reaction, the total mass of the substances before the reaction is equal to the total mass of the substances after the reaction.

– Observation Comparison:
– Before Reaction:
– Mass of sodium carbonate + Mass of ethanoic acid = 5.3g + 6g = 11.3g
– After Reaction:
– Mass of sodium ethanoate + Mass of carbon dioxide + Mass of water = 8.2g + 2.2g + 0.9g = 11.3g

– Equality in Mass:
– The total mass before the reaction matches the total mass after the reaction, both being 11.3 grams.

– Implication:
– This correspondence confirms that no mass is either lost or gained during the chemical reaction between sodium carbonate and ethanoic acid.

– Conclusion:
– The given observations align perfectly with the law of conservation of mass, demonstrating that mass remains constant in a chemical reaction, affirming a fundamental principle in chemistry.