Following statement is true or false ? Nitrogen forms five oxides. It proves the law of multiple proportions.

Answer

To determine whether the statement "Nitrogen forms five oxides. It proves the law of multiple proportions." is true or false, we can break down the solution into the following steps:

### Step 1: Understand the Law of Multiple Proportions
The law of multiple proportions states that when two elements combine to form more than one compound, the ratios of the masses of the second element that combine with a fixed mass of the first element can be expressed as small whole numbers.

### Step 2: Identify the Oxides of Nitrogen
The five oxides of nitrogen are:
1. Nitric oxide (NO)
2. Dinitrous oxide (N2O)
3. Nitrogen trioxide (N2O3)
4. Nitrogen tetroxide (N2O4)
5. Nitrogen pentoxide (N2O5)

### Step 3: Fix the Mass of Nitrogen
To apply the law of multiple proportions, we need to fix the mass of nitrogen. Let's take the mass of 2 nitrogen atoms as the fixed mass:
- Mass of 1 nitrogen atom = 14 g
- Mass of 2 nitrogen atoms = 2 × 14 = 28 g

### Step 4: Calculate the Mass of Oxygen in Each Compound
Now, we calculate the mass of oxygen in each of the nitrogen oxides:
1. For NO: 1 oxygen atom = 16 g
2. For N2O: 1 oxygen atom = 16 g
3. For N2O3: 3 oxygen atoms = 3 × 16 = 48 g
4. For N2O4: 4 oxygen atoms = 4 × 16 = 64 g
5. For N2O5: 5 oxygen atoms = 5 × 16 = 80 g

### Step 5: Calculate the Ratios of Oxygen Masses
Now, we can express the mass of oxygen in relation to the fixed mass of nitrogen (28 g):
- For NO: 16 g
- For N2O: 16 g
- For N2O3: 48 g
- For N2O4: 64 g
- For N2O5: 80 g

### Step 6: Form Ratios
Now we can form the ratios of the masses of oxygen:
- NO: 16 g (1)
- N2O: 16 g (1)
- N2O3: 48 g (3)
- N2O4: 64 g (4)
- N2O5: 80 g (5)

The ratios of the masses of oxygen corresponding to the fixed mass of nitrogen (28 g) are:
- 16 : 16 : 48 : 64 : 80
- Simplifying gives us the ratio: 1 : 1 : 3 : 4 : 5

### Step 7: Conclusion
Since the ratios of the masses of oxygen can be expressed as small whole numbers, this confirms the law of multiple proportions. Therefore, the statement "Nitrogen forms five oxides. It proves the law of multiple proportions." is **True**.