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Work Out the Formulae for the Following Compounds: Calcium Carbonate - Science

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Short Note

Work out the formulae for the following compounds:

Calcium carbonate

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Solution

Valency of Calcium = 2
Valency of Carbonate ion = −2


Formula for calcium carbonate can be worked out by crossing  the valencies of the constituent elements/ions. +2 positive charge of calcium neutralizes the −2 negative charge of carbonate ion.
Therefore, formula for calcium carbonate is: CaCO3.

Concept: Laws of Chemical Combination - Law of Constant Proportions or Law of Definite Proportions
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APPEARS IN

Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 3 Atoms and Molecules
Short Answers | Q 20.2 | Page 151
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