Different proportions of oxygen in the various oxides of nitrogen prove the law of

Options

A. equivalent proportion
B. multiple proportions
C. constant proportions
D. conservatlon of matter

Explanation

To solve the question regarding how different proportions of oxygen in the various oxides of nitrogen prove a specific law, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Oxides of Nitrogen:**
- The common oxides of nitrogen are NO (nitric oxide), NO2 (nitrogen dioxide), and N2O (nitrous oxide). Each of these compounds contains nitrogen and oxygen in different proportions.

2. **Examine the Proportions of Oxygen:**
- In NO, the ratio of nitrogen to oxygen is 1:1.
- In NO2, the ratio of nitrogen to oxygen is 1:2.
- In N2O, the ratio of nitrogen to oxygen is 2:1.
- This shows that the amount of oxygen varies while the amount of nitrogen is also changing.

3. **Understanding the Law of Multiple Proportions:**
- The law of multiple proportions states that when two elements combine to form more than one compound, the different masses of one element that combine with a fixed mass of the other element are in a ratio of small whole numbers.
- In our case, the different oxides of nitrogen (NO, NO2, N2O) illustrate this law as they show different ratios of nitrogen to oxygen.

4. **Conclusion:**
- The varying proportions of oxygen in the oxides of nitrogen demonstrate the law of multiple proportions because they show that nitrogen can combine with oxygen in different ratios to form distinct compounds.

### Final Answer:
The different proportions of oxygen in the various oxides of nitrogen prove the **law of multiple proportions**.

---