1.

In a reaction, 5.3 g of sodium carbonate reacted with 6g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass. underset("carbonate")("Sodium") + underset("acid")("Ethanoic") to underset("ethanoate")("Sodium")+ "Water" +underset("dioxide")("Carbon")

Answer»

Solution :`UNDERSET("CARBONATE")("SODIUM") + underset("ACID")("Ethanoic") to underset("ethanoate")("Sodium")+ "Water" +underset("dioxide")("Carbon")`
`5.3 g + 6 g to 8.2 g+0.9 g + 2.2 g`
`11.3 g to 11.3 g`
i.e., L.H.S. = R.H.S.
`:.` mass of reactants = mass of product
This shows that the observations are in agreement with the LAW of conservation of mass.


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