Advertisements
Advertisements
प्रश्न
Work out the formulae for the following compounds:
Calcium carbonate
Advertisements
उत्तर
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.
APPEARS IN
संबंधित प्रश्न
Which postulate of Dalton’s atomic theory can explain the law of definite proportions?
When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen? Which law of chemical combinations will govern your answer?
Name the scientist who gave law of constant proportions.
Which part of the Dalton's atomic theory came from the law of constant proportions given by Proust ?
Give one major drawback of Dalton's atomic theory of matter.
What do we call those particles which are formed by the gain of electrons by atoms ?
What do we call those particles which are formed by the loss of electrons by atoms ?
Two samples ‘m’ and ‘n’ of slaked lime were obtained from two different reactions. The details about their composition are as follows:
- ‘sample m’ mass: 7g
- Mass of constituent oxygen: 2g
- Mass of constituent calcium: 5g
- ‘sample n’ mass: 1.4g
- Mass of constituent oxygen: 0.4g
- Mass of constituent calcium: 1.0g
Which law of chemical combination does this prove? Explain.
The same proportion of carbon and oxygen in the carbon dioxide obtained from different sources proves the law of ______.
In water, hydrogen and oxygen are combined in the ratio of _____ by mass.
