Import Question JSON

Current Question (ID: 18235)

Question:

$\text{The quantity of electricity required to reduce } 12.3 \text{ g of nitrobenzene to aniline}$ $\text{with } 50\% \text{ current efficiency is:}$

Options:

1. $1 \text{ F}$
2. $0.6 \text{ F}$
3. $0.5 \text{ F}$
4. $1.2 \text{ F}$

Solution:

$\text{Use Faraday's Law.}$ $\text{C}_6\text{H}_5\text{NO}_2 + 6\text{H}^+ + 6\text{e}^- \rightarrow \text{C}_6\text{H}_5\text{NH}_2 + 2\text{H}_2\text{O}$ $\text{Equivalent weight (E) of } \text{C}_6\text{H}_5\text{NO}_2 = \frac{M}{6} = \frac{123}{6}$ $\text{Equivalent wt. of nitrobenzene} = \frac{123}{6} = 20.5$ $\therefore \text{equivalents of nitrobenzene} = \frac{12.3}{20.5} = 0.6$ $\text{Amount of charge required with } 50\% \text{ current effeciency} = 2 \times 0.6 = 1.2 \text{ F}$

Import JSON File

Upload a JSON file containing LaTeX/MathJax formatted question, options, and solution.

Expected JSON Format:

{
  "question": "The mass of carbon present in 0.5 mole of $\\mathrm{K}_4[\\mathrm{Fe(CN)}_6]$ is:",
  "options": [
    {
      "id": 1,
      "text": "1.8 g"
    },
    {
      "id": 2,
      "text": "18 g"
    },
    {
      "id": 3,
      "text": "3.6 g"
    },
    {
      "id": 4,
      "text": "36 g"
    }
  ],
  "solution": "\\begin{align}\n&\\text{Hint: Mole concept}\\\\\n&1 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\text{ moles of carbon atom}\\\\\n&0.5 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\times 0.5 \\text{ mol} = 3 \\text{ mol}\\\\\n&1 \\text{ mol of carbon} = 12 \\text{ g}\\\\\n&3 \\text{ mol carbon} = 12 \\times 3 = 36 \\text{ g}\\\\\n&\\text{Hence, 36 g mass of carbon present in 0.5 mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6].\n\\end{align}",
  "correct_answer": 4
}