Import Question JSON

Current Question (ID: 8618)

Question:

$\text{The oxidising agent and reducing agent in the given reaction are}$ $5\text{P}_4\text{(s)} + 12\text{H}_2\text{O}\text{(l)} + 12\text{HO}^-\text{(aq)} \rightarrow 8\text{PH}_3\text{(g)} + 12\text{HPO}_2^-\text{(aq)}$

Options:

1. $\text{Oxidising agent = P}_4\text{; Reducing agent = P}_4$
2. $\text{Oxidising agent = P}_4\text{; Reducing agent = H}_2\text{O}$
3. $\text{Oxidising agent = H}_2\text{O}\text{; Reducing agent = P}_4$
4. $\text{None of the above}$

Solution:

$\text{Hint: Disproportionation reaction}$ $\text{The balanced reaction is as follows:}$ $5\text{P}_4\text{(s)} + 12\text{H}_2\text{O}\text{(l)} + 12\text{HO}^-\text{(aq)} \rightarrow 8\text{PH}_3\text{(g)} + 12\text{HPO}_2^-\text{(aq)}$ $\text{The O.N. (oxidation number) of P decreases from 0 in P}_4 \text{ to } -3 \text{ in PH}_3 \text{ and increases from 0 in P}_4 \text{ to } +2 \text{ in HPO}_2^-\text{. Hence, P}_4 \text{ acts both as an oxidizing agent and a reducing agent in the reaction.}$

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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
}