Correct Answer - Option 1 : Law of multiple proportion
Concept:
Law of multiple proportions:
- When two or more compounds are formed by the combination of two elements, the weight of one element that combines with the other is in simple ratios of whole numbers.
- It was formulated by Dalton
Law of reciprocal proportion:
- When two different elements combine with the same mass of a third element, then their masses are either same or in a simple ratio of whole numbers.
- When hydrogen and oxygen combine with Carbon to form CH4 and CO2 respectively, their masses are in ratio 1 : 8.
Law of conservation of mass:
- Mass in an isolated system can neither be created nor destroyed.
- During a chemical process, the mass of the elements is the same as before after the reaction.
Explanation:
The five oxides of Nitrogen and the weight ratio of the elements are:
|
Compound
|
Nitrogen
|
Oxygen
|
Ratio with a fixed mass of N
|
| |
|
|
N
|
O
|
|
N2O
|
28
|
16
|
14
|
8
|
|
NO
|
14
|
16
|
14
|
16
|
|
N2O3
|
28
|
48
|
14
|
24
|
|
NO2
|
14
|
32
|
14
|
32
|
|
N2O5
|
28
|
80
|
14
|
40
|
- When oxides of nitrogen are formed with oxygen, the masses of oxygen are 8g,16g, 24g, 32g, 40etc. the ratio is 1 : 2 : 3 : 4 : 5.
Hence, the formation of five oxides of nitrogen is an example of Law of multiple proportion.
