Question 1
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.
Sodium carbonate + Ethanoic acid $\to$ Sodium ethanoate + Carbon dioxide + Water

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Solution

In the given reaction, sodium carbonate reacts with ethanoic acid to produce sodium ethanoate, carbon dioxide, and water

Sodium carbonate + Ethanoic acid $\to$ Sodium ethanoate + Carbon dioxide + Water

Mass of sodium carbonate = 5.3g (given)

Mass of ethanoic acid = 6 g (given)

Mass of carbon dioxide = 2.2 g (given)

Mass of water = 0.9 g (given)

Mass of sodium ethanoate = 8.2 g (given)

Now total mass before reaction = (5.3 g + 6 g) = 11.3 g

Now total mass after reaction = (8.2 g + 2.2 g + 0.9 g) = 11.3 g
Law of conservation of mass :
The law states that mass can neither be created nor destroyed in a chemical reaction i.e. Total masses of reactants is equal to the sum of masses of products

Total mass before reaction = Total mass after reaction

Therefore the given observation is in agreement with the law of conservation of mass.

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Similar questions

Q. 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.

Q. Sodium carbonate reacts with ethanoic acid to form sodium ethanoate, carbon dioxide and water. In an experiment, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid to form 8.2 g of sodium ethanoate, 2.2 g of carbon dioxide and 0.9 g of water. Show that this data verifies the law of conservation of mass.

Q. Ethanoic acid + Sodium Carbonate

\to

Sodium ethanoate + Carbon dioxide + Water.
If 6 g of acid reacts with 5.3 g of salt, the products are 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Which law is obeyed ?

Q. In a reaction

5.3 g

of sodium carbonate reacted with

6 g

of ethanoic acid. The products were

2.2 g

of carbondioxide,

0.9 g

of water and

8.2 g

of sodium ethanoate. These observations are in agreement with :

In a reaction, 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. Which law is applicable in this case?

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