In Kjeldahl's method used for estimation of nitrogen, ammonia evolved from 0.6g of ml sample of organic compound neutralised 20 ml of 1 N `H_(2)SO_(4)`. Then calculate % of nitrogen in that compound :

Options

A. `37.33`
B. `46.67`
C. `45.77`
D. `43.33`

Answer

To calculate the percentage of nitrogen in the organic compound using Kjeldahl's method, we can follow these steps:

### Step 1: Understand the formula for calculating the percentage of nitrogen.
The formula to calculate the percentage of nitrogen (N) in the sample is given by:

\[ \% N = \frac{1.4 \times N \times V}{m} \]

Where:
- \( N \) = Normality of \( H_2SO_4 \)
- \( V \) = Volume of \( H_2SO_4 \) used (in mL)
- \( m \) = Mass of the organic compound sample (in grams)

### Step 2: Identify the values from the problem.
From the problem statement:
- Mass of the organic compound sample, \( m = 0.6 \, \text{g} \)
- Normality of \( H_2SO_4, N = 1 \, \text{N} \)
- Volume of \( H_2SO_4, V = 20 \, \text{mL} \)

### Step 3: Substitute the values into the formula.
Now, we can substitute the values into the formula:

\[ \% N = \frac{1.4 \times 1 \times 20}{0.6} \]

### Step 4: Perform the calculations.
Calculating the numerator:

\[ 1.4 \times 1 \times 20 = 28 \]

Now, divide by the mass of the sample:

\[ \% N = \frac{28}{0.6} = 46.67 \]

### Step 5: State the final answer.
The percentage of nitrogen in the organic compound is:

\[ \% N = 46.67\% \]