Question

2.8g of CaO prepared by heating limestone was found to contain 0.8g of Oxygen. When 1g of Oxygen is treated with Ca, 3.5g of CaO was obtained. Show that the result illustrates the law of definite proportions​

Answer 1

Law of definite proportion states that a given compound always contains exactly the same proportion of elements by weight.

Case 1:

Ca

2.8g O

0.8g ⟹1g of O reacts with =

0.8

2.8

=3.5g of CaO

Case 2:

3.5g 1g⟹1g of O reacts qith 3.5g of CaO.

Ratio of O reacting with Ca to form CaO is 1:1.

Hence results illustrate the law of definite proportion.

Hope it is helpful...

Plz mark me as the brainlist if right