Question

When sodium fusion extract of an organic compound was treated with CHCl$_3$, then violet colour of halogen appears. If 0.15 gm of the organic compound gives 0.12 gm of the silver halide, then find the percentage of halide in the organic compound.

• A. 43.23%
• B. 45.55%
• C. 42.32%
• D. 44.12%

Hint:

When calculating the percentage of halide in an organic compound, use the ratio of the mass of halide to the mass of the organic compound along with the atomic and molecular weights to find the percentage.

Answer 1

The Correct Option is A

Step 1: Understanding the formula.
The percentage of halide (I) in the organic compound is calculated using the formula: \[ % \text{ of I} = \frac{\text{Atomic weight of I}}{\text{Molecular weight of AgI}} \times \frac{m}{W} \times 100 \] Where: - Atomic weight of I (Iodine) = 127 - Molecular weight of AgI (Silver iodide) = 235 - m = mass of silver halide formed = 0.12 gm - W = mass of organic compound = 0.15 gm

Step 2: Substituting the values.
Substitute the known values into the formula: \[ % \text{ of I} = \frac{127}{235} \times \frac{0.12}{0.15} \times 100 \]
Step 3: Calculating the percentage.
Now, perform the calculation: \[ % \text{ of I} = \frac{127}{235} \times \frac{0.12}{0.15} \times 100 = 43.23% \]
Step 4: Conclusion.
Thus, the percentage of halide in the organic compound is 43.23%, which corresponds to option (1).